Collective nouns name a set of beings or things with a single word. In Portuguese, they function as full nouns and can occupy the head of the noun phrase, receiving determiners and complements like any other noun. This class is closely related to Countable Nouns, to Uncountable Nouns and to the chapters on Gender of Nouns and Number of Nouns.

A collective noun is a singular noun that designates an entire grouping, such as a flock, a troupe, or a shoal. The collective value can refer to animals, people, objects or natural elements, and the word chosen depends on the type of named set. Some collectives are lexicalized and others are formed by historical processes or by productive suffixation.

IdeiaIdea	ExemploExample
Um coletivo de animais nomeia um grupo natural da mesma espécie.A collective of animals names a natural group of the same species.	O cardume avançava pelo rio.The shoal advanced along the river.
Um coletivo de pessoas nomeia um agrupamento humano reconhecido como unidade.A collective of people denotes a human grouping recognized as a unit.	A turma chegou cedo.The class arrived early.
Um coletivo de objetos ou coisas nomeia um conjunto percebido como todo.A collective of objects or things names a set perceived as a whole.	A coleção ocupava a estante.The collection occupied the shelf.

Among the most frequent collectives are shoal for fish, swarm for bees, wolf pack for wolves, and pack for dogs. In the human realm, there appear crowd, class, clan, entourage, team, and school delegation. There are also collectives for material and geographic groupings, such as collection, bundle, archive, set, and archipelago.

IdeiaIdea	ExemploExample
Cardume é usado para peixes.Shoal is used for fish.	O cardume brilhava na água.The shoal gleamed in the water.
Enxame é usado para abelhas.Swarm is used for bees.	O enxame cercou o jardim.The swarm surrounded the garden.
Alcateia é usado para lobos.The wolf pack is used for wolves.	A alcateia atravessou a neve.The wolf pack crossed the snow.
Matilha é usado para cães.The pack is used for dogs.	A matilha seguiu o caçador.The pack followed the hunter.

Most collectives are lexicalized, that is, they exist as established words in the lexicon and not as a transparent productive rule. Some have a relation to suffixes such as -ada, -al, and -eiro, while others depend on historical roots inherited by use. Therefore, the appropriate collective needs to be learned as part of vocabulary, and not merely deduced from form.

IdeiaIdea	ExemploExample
Coletivos lexicalizados são aprendidos como palavras estabelecidas no léxico.Lexicalized collectives are learned as established words in the lexicon.	A alcateia é uma palavra fixa.The term 'alcateia' is a fixed lexical item.
Alguns coletivos podem mostrar marcas derivacionais históricas.Some collectives may show historical derivational markings.	A manada reúne animais em grupo.The herd gathers animals into a group.
A forma do coletivo nem sempre revela sozinho o seu valor semântico.The form of the collective does not always reveal its semantic value by itself.	O arquipélago é um conjunto de ilhas.The archipelago is a group of islands.

As a singular noun, the collective normally requires a verb and an adjective in the singular, as in 'the herd was large'. When the collective is followed by a complement with de, the agreement can oscillate and reflect the elements of the group, especially in colloquial use. In these cases, the singular form remains the more formal option, while the plural of the verb can appear frequently in speech.

IdeiaIdea	ExemploExample
O coletivo singular costuma concordar com verbo e adjetivo no singular.The singular collective usually agrees with the verb and the adjective in the singular.	A turma estava animada.The class was excited.
O complemento introduzido por de pode favorecer concordância com os elementos.The complement introduced by de can favor agreement with the elements.	O bando de pássaros eram ruidosos.The flock of birds was noisy.
Na fala coloquial, o verbo no plural com coletivo seguido de de é uma variação comum.In colloquial speech, the plural verb with a collective followed by de is a common variation.	A equipe de alunos chegaram cedo.The team of students arrived early.

Collectives can pluralize when one wants to indicate more than one group, such as bands, herds, or classes. In some cases, the plural is less frequent or changes the meaning, so the plural form must be interpreted in context. There are also collectives that are restricted to the singular in ordinary use or that change meaning when pluralized.

IdeiaIdea	ExemploExample
O plural do coletivo indica vários grupos.The plural of the collective indicates several groups.	Os bandos cruzaram o campo.The bands crossed the field.
Alguns coletivos mudam de sentido no plural.Some collectives change meaning in the plural.	Os casais ocuparam a mesa.Couples occupied the table.
Alguns coletivos têm plural raro ou restrito pelo uso.Some collectives have rare plurals or restricted usage.	Os arquipélagos atraem navegadores.Archipelagos attract sailors.

Some nouns can act as collectives in certain contexts and as common nouns in others, which creates semantic ambiguity. Words such as casal, povo and gente can vary between collective value, individualized value and abstract use, depending on the sentence. The interpretation depends on the context and the complement that accompanies the noun.

IdeiaIdea	ExemploExample
Casal pode designar duas pessoas unidas como um todo.A couple can designate two people joined as a whole.	O casal chegou junto.The couple arrived together.
Povo pode referir uma coletividade humana ampla.People can refer to a broad human community.	O povo ocupou a praça.The people occupied the square.
Gente pode funcionar como nome coletivo de pessoas.Gente can function as a collective noun for people.	A gente esperava na fila.We were waiting in line.

The collective noun functions as the head of the noun phrase and can receive determiners, as in 'the class of students'. This position allows it to organize the reference of the group without losing its value as a unit. In nominal contexts, the complement clarifies the nature of the named set and helps distinguish the collective from any ordinary common noun.

IdeiaIdea	ExemploExample
O coletivo pode ser precedido por determinante.The collective can be preceded by a determiner.	A comitiva entrou no salão.The delegation entered the hall.
O coletivo pode receber complemento para especificar os elementos.The collective can take a complement to specify the elements.	A turma de alunos chegou cedo.The class of students arrived early.
O coletivo ocupa o núcleo do sintagma nominal.The collective serves as the head of the noun phrase.	O arquipélago impressionava os visitantes.The archipelago impressed the visitors.

Some collectives vary by region, and there are preference differences between Brazilian Portuguese and European Portuguese. Certain words also show more colloquial uses, more formal uses, or uses restricted to specific contexts. This variation does not alter the grammatical category, but influences the most natural lexical choice in each community.

RegiãoRegion	Palavra ou ExpressãoWord or Expression	Definição RegionalRegional Definition	ExemploExample
BrasilBrazil	turmaClass	É muito usada para indicar um grupo de pessoas reunido para aprender ou trabalhar.It is frequently used to indicate a group of people gathered to learn or work.	A turma estudava quando a campainha tocou.The class was studying when the bell rang.
PortugalPortugal	comitivaentourage	É frequente para indicar um grupo que acompanha alguém em deslocamento ou evento.It is common to indicate a group that accompanies someone on a trip or to an event.	A comitiva seguiu o presidente, que sorria.The delegation followed the president, who was smiling.
Uso geralGeneral use	arquipélagoarchipelago	É usada para nomear um conjunto de ilhas em qualquer variedade padrão.It is used to name a group of islands in any standard variety.	O arquipélago recebeu visitantes, que admiravam o mar.The archipelago received visitors, who admired the sea.

Collective nouns name sets with a single word and act as singular nouns within the sentence. Agreement usually remains in the singular, but may vary when there is a complement introduced by de and when colloquial use favors readability by the members of the group. The plural, semantic ambiguity, and regional variation show that the collective depends as much on the lexical form as on the context of use.