Collective nouns name, in the singular, a group of beings or things considered as a single unit. Their function is to designate groupings as a whole rather than individual elements, which is why they belong to the study of nouns and relate to nominal number and nominal gender. In Sustantivos they appear as a particularly useful class for expressing sets with precision.

Many collectives name groups of animals, people, or objects. Their meaning depends on the referent they group and the context, such that the same unit structure can apply to living beings or to organized objects. It is also useful to distinguish them from other group nouns that function similarly to the Countable Nouns.

IdeaIdea	EjemploExample
Un colectivo puede nombrar un grupo de animales.A collective noun can name a group of animals.	La manada avanzaba por el bosque.The herd was moving through the forest.
Un colectivo puede nombrar un grupo de peces.A collective noun can name a group of fish.	El cardumen se movía junto a la costa.The school moved near the coast.
Un colectivo puede nombrar un grupo de cerdos.A collective noun can name a group of pigs.	La piara descansaba en el corral.The sounder rested in the pen.
Un colectivo puede nombrar un grupo de personas.A collective noun can name a group of people.	La gente esperaba en la puerta.The people were waiting at the door.
Un colectivo puede nombrar un grupo de barcos.A collective noun can name a group of ships.	La flota salió del puerto al amanecer.The fleet left the port at dawn.
Un colectivo puede nombrar un conjunto de árboles.A collective noun can name a group of trees.	La arboleda daba sombra al camino.The grove shaded the path.
Un colectivo puede nombrar un conjunto organizado de elementos.A collective noun can name an organized group of elements.	El equipo trabajó con precisión.The team worked with precision.

Many collective nouns are formed with common suffixes that help recognize their value as a group. The most common suffixes are ada, edo, al, aje and ería, although not every word ending in that way is necessarily collective. The meaning must be verified by usage, just as with other relations of form and number treated in Número Nominal.

IdeaIdea	EjemploExample
El sufijo ada puede formar nombres de conjunto.The suffix ada can form collective nouns.	La alameda reunía muchos árboles.The alameda gathered many trees.
El sufijo edo puede formar nombres de conjunto.The suffix edo can form collective nouns.	La robleda cubría la ladera.The robleda covered the hillside.
El sufijo al puede formar nombres de conjunto.The suffix al can form collective nouns.	La arboleda formaba un espacio fresco.The arboleda formed a cool space.
El sufijo aje puede formar nombres de conjunto.The suffix aje can form collective nouns.	El equipaje quedó en la entrada.The luggage stayed at the entrance.
El sufijo ería puede formar nombres de conjunto.The suffix ería can form collective nouns.	La librería ofrecía muchos títulos.The bookstore offered many titles.

As a rule, collective nouns take a singular verb because the sentence presents the group as a single unit. Hence one says La gente es or El alumnado participa, even when the referent is composed of many people. This preference for unity is the most formal and stable form, although in colloquial use some varieties allow plural if the members of the group are emphasized.

IdeaIdea	EjemploExample
El colectivo suele exigir verbo en singular.The collective usually requires a singular verb.	La gente está contenta.The people are happy.
El colectivo conserva el singular aunque represente muchas personas.The collective retains the singular even though it represents many people.	El alumnado participa con interés.The student body participates with interest.
El singular es la opción preferida en registro formal.The singular is the preferred option in formal register.	El personal llegó temprano.The staff arrived early.
El plural puede aparecer en uso coloquial regional cuando se destaca a los miembros.The plural may appear in regional colloquial use when the members are highlighted.	El equipo ganaron por sorpresa.The team won by surprise.

The adjective that accompanies a collective noun usually goes in singular because it agrees with the named unit and not with the individuals who compose it. Thus, the enraged crowd presents the group as a single emotional bloc. If the speaker wishes to emphasize distribution among the members, the meaning can change and also pull along the verbal agreement, as happens with Género Nominal and other agreements in the nominal phrase.

IdeaIdea	EjemploExample
El adjetivo suele concordar con el colectivo en singular.The adjective usually agrees with the collective in singular.	La multitud enfurecida avanzó.The enraged crowd advanced.
La concordancia singular presenta el grupo como unidad.Singular agreement presents the group as a unit.	El vecindario tranquilo dormía.The quiet neighborhood slept.
La lectura distributiva puede centrar la atención en los miembros.The distributive reading can focus attention on the members.	La familia contenta salió junta.The happy family left together.

Collective nouns can also be pluralized to indicate several sets, not several loose individuals. Several herds, several flocks, or several teams preserve the sense of grouping, but multiply the units of the set. In some cases, words such as police admit collective or individual readings depending on context, and the choice between singular and plural depends on whether a single unit is understood or a distribution of members.

IdeaIdea	EjemploExample
El plural indica varios conjuntos.The plural indicates several sets.	Llegaron varias manadas al río.Several herds arrived at the river.
El contexto distingue unidad y distribución.The context distinguishes unit and distribution.	La policía llegó rápido.The police arrived quickly.
Algunas palabras permiten lectura colectiva o individual.Some words allow collective or individual readings.	La policía vigilaba la plaza.The police were patrolling the square.
El sentido cambia según se vea el grupo como bloque o como miembros.The sense changes depending on whether the group is seen as a block or as members.	El vecindario estaba unido.The neighborhood was united.

Collective nouns name a group in the singular and for that reason usually require singular verbal and adjectival agreement. Their meanings cover people, animals, and objects, and their formation can be recognized by common suffixes such as ada, edo, al, aje, and ería. Pluralization serves to count complete sets, and variation in agreement appears when the context favors a more distributive or a more unitary reading.