Countable nouns name people, animals, or things that can be separated and counted as units: book, chair, dog, coin. With them you can say one, two, three without changing the basic sense of the word. That is why they fit well with quantity expressions and with the plural. If the noun is removed, the sentence loses the concrete object that is being named. In Spanish, moreover, each noun has nominal gender and nominal number, so the form changes according to the context.

Nature of countable nouns

Idea
A countable noun names a reality that can be divided into units.
These nouns allow counting directly without changing their main meaning.
They usually refer to things individual and concrete.

The singular names a single unit: car, window, student. The plural names more than one: cars, windows, students. The difference is not only in quantity; the reference also changes. A book indicates a single object, while books speaks of several or of the general set. The singular can appear to talk about a whole class when it goes with an article: the tiger as a species, the apple as fruit in general.

Number in countable nouns

Idea
The singular is used for one single unit.
The plural is used for more than one unit.
The singular form can name a minimal amount without needing any other support.

Countable nouns usually go with articles that mark whether a concrete unit or a known group is presented. A and an introduce a single unit: a glass, a table. The and the indicate something already identified or known: the glass, the table. In plural, some and some indicate indefinite quantity: some neighbors, some flowers. The and the present a definite set: the neighbors, the flowers. The article always agrees with the noun's gender and number.

Combination of articles with countables

Usage	Explanation
Indefinite singular reference	Use a or an when you talk about one unidentified thing.
Definite singular reference	Use the when you talk about a known or specific element.
Indefinite plural reference	Use unos or unas when you talk about several non-specific things.
Defined plural reference	Use the when you talk about a group already identified.

With numbers, countable nouns express exact quantities: two cups, five students, twenty pages. With quantifiers like many, few, several, some, all, each, the amount can be approximate or distributive: many houses, several messages, few minutes. Normally plural is used when the quantifier refers to more than one unit. Each goes with singular because it distributes one unit at a time: each child, each answer. These elements appear before the noun and order the quantity precisely.

Quantity with countable nouns

Usage	Explanation
Exact quantity	Use a number to express how many units there are.
Approximate quantity	Use quantifiers to indicate an imprecise quantity.
Small quantity	Use expressions like few to signal a scarcity of units.
Abundant quantity	Use expressions like several to show more than one without specifying the number.

The normal plural form adds -s if the noun ends in a vowel: book → books, house → houses. If it ends in a consonant, it normally adds -es: paper → papers, woman → women. Nouns ending in -z change the z to c and add -es: light → lights. Some nouns ending in a stressed vowel carry -es: sofa → sofas, coffee → coffees. The plural must keep the correct form so that it matches the article, the adjective, and the verb where appropriate.

Common plural rules

Idea
If the word ends with a vowel, it normally adds s.
If the word ends with a consonant, it normally adds es.
If the word ends with z, change the z to c and add es.
Some nouns keep an irregular plural form.

Countable nouns are usually accompanied by adjectives that agree in gender and number: tall boy, tall girl, tall boys, tall girls. If the noun changes from singular to plural, the adjective also changes. If it changes from masculine to feminine, the adjective adopts the same form. When there are several nouns of different genders, the adjective usually goes in masculine plural: the book and the magazine new. Agreement links the noun with the words that describe it and makes the reference clear.

Concordance between noun and adjective

Idea
The adjective must agree in gender with the noun.
The adjective must agree in number with the noun.
When the noun changes number, the adjective also changes form.

Some nouns change meaning depending on whether they are singular or plural. The wedding names a concrete celebration, while the weddings can refer to several ceremonies or to the world of that type of events. Reason usually means cause or argument, but reasons can bring together several arguments. The sky names the space above the earth; the skies can have a broader, poetic, or religious sense. The number not only indicates quantity: it can also change the interpretation the speaker gives to the noun.

gentesplumaropascaféropaplumasgentecafés

---

Conjunto de plumas de un ave o adorno hecho con ellasObjeto que se usa para escribirPueblos o grupos humanos distintos en contextos formales o literariosBebida hecha con granos tostadosPiezas de vestir consideradas por separado en un uso menos comúnConjunto de personas visto como grupoConjunto de prendasLocal donde se sirve café y otras bebidas

Nouns with changing meaning

Word	Definition
café	Beverage made from roasted beans.
cafés	Establishment where coffee and other drinks are served.
pluma	Object used for writing.
plumas	Set of feathers of a bird or adornment made with them.
gente	Collection of people seen as a group.
gentes	People or groups distinct in formal or literary contexts.
ropa	Set of garments.
ropas	Pieces of clothing considered separately in a less common usage.

Scramble