The common noun designates a person, an object, an animal, a place or an idea. It serves to identify what is being talked about and often organizes the sentence around it. In Nominal Gender and Nominal Number, its form varies according to gender and number.

The common noun is masculine or feminine, and this gender governs agreement of determiners and adjectives. The feminine is often formed by adding an e, but some nouns use more precise suffixes like -esse or -trice. Some nouns change meaning according to gender, which requires checking the context.

IdéeIdea	ExempleExample
Le féminin se forme souvent par l’ajout de e.The feminine is often formed by adding an e.	acteur devient actriceactor becomes actress
Certains féminins se forment avec esse.Some feminine forms are formed with -esse.	docteur devient doctoressedoctor becomes doctress
Certains féminins se forment avec trice.Some feminine forms are formed with -trice.	directeur devient directricedirector becomes directrice
Le genre peut changer le sens.Gender can change the meaning.	le livre désigne un objetthe book denotes an object

The common noun can be singular or plural, and the plural is most often marked by -s. Some nouns take -x or -aux in the plural, and some forms must be learned as irregular or invariable. The agreement of the determiner and adjectives follows this number.

IdéeIdea	ExempleExample
Le pluriel se marque souvent par s.The plural is often marked by -s.	une maison devient des maisonsa house becomes houses
Certains noms prennent x au pluriel.Some nouns take -x in the plural.	un cheveu devient des cheveuxa hair becomes hairs
Certains noms prennent aux au pluriel.Some nouns take -aux in the plural.	un cheval devient des chevauxa horse becomes horses
Certains pluriels sont irréguliers.Some plurals are irregular.	un œil devient des yeuxan eye becomes eyes
Certains noms restent invariants.Some plurals remain invariant.	un prix devient des prixa price becomes prices

The common noun is most often used with an article that marks its gender and number. The forms of the determiner therefore change according to the form of the noun, such as le, la, les, un, une and des. The agreement between the noun and its determiners makes the reference clear in the sentence.

IdéeIdea	ExempleExample
Le déterminant s’accorde en genre.The determiner agrees in gender.	la table est fémininethe table is feminine
Le déterminant s’accorde en nombre.The determiner agrees in number.	les tables sont au plurielthe tables are plural
L’article défini précise un être ou une chose connus.The definite article identifies a known being or thing.	le chat dortthe cat sleeps
L’article indéfini présente un être ou une chose non identifiés.The indefinite article presents an unidentified being or thing.	une idée surgitan idea arises

The common noun can be the subject, direct object, indirect object, or a noun complement. Its place and its relation to the verb or another noun determine its function in the sentence. In a sentence like The cat eats the mouse, each noun receives a precise function according to its position and its connection to the verb.

IdéeIdea	ExempleExample
Le sujet fait l’action ou indique ce dont on parle.The subject does the action or indicates what we are talking about.	Le chat dortThe cat sleeps
Le COD complète directement le verbe.The direct object directly completes the verb.	Le chat mange la sourisThe cat eats the mouse
Le COI complète le verbe avec une préposition.The indirect object completes the verb with a preposition.	Il parle à son amiHe speaks to his friend
Le complément du nom précise un autre nom.The noun complement specifies another noun.	la porte de la maisonthe door of the house

An animate noun designates a living being, and an inanimate noun designates a thing, an idea or a non-living reality. This distinction can influence the choice of pronoun and certain agreement rules, especially with the past participle when the direct object precedes the verb. Recognizing animacy helps in choosing the correct grammatical construction.

IdéeIdea	ExempleExample
Un nom animé renvoie à un être vivant.An animate noun refers to a living being.	la fillette ritThe little girl laughs
Un nom inanimé renvoie à une chose ou à une idée.An inanimate noun refers to a thing or an idea.	la chaise est lourdeThe chair is heavy
Le COD placé avant le verbe peut déclencher l’accord du participe passé.The direct object placed before the verb can trigger the agreement of the past participle.	les fleurs qu il a cueilliesThe flowers that he picked

Some nouns vary depending on region, register or cultural context, especially with geographic proper names and certain familiar or formal nouns. A single word may also change meaning according to gender, which requires reading the entire sentence before interpreting the noun. Compound forms and collective nouns also follow particular behaviors that require observing established usage.

RégionRegion	Mot ou expressionWord or expression	Définition régionaleRegional definition	ExempleExample
FranceFrance	les Alpesthe Alps	L’article avec certains noms géographiques dépend de l’usage local.The article with certain geographic names depends on local usage.	En France, les Alpes sont célèbres, car elles dominent le paysageIn France, the Alps are famous, as they dominate the landscape
QuébecQuebec	un chara char	Certains mots familiers remplacent un nom plus standard selon le registre.Some familiar words replace a noun with a more standard one depending on register.	Au Québec, un char avance vite, car c est un mot courantIn Quebec, a char moves quickly, as it is a common word
SoutenuFormal	la livrethe pound	Un même nom peut changer de sens selon le genre.A noun can change meaning according to gender.	La livre coûte cher, car elle désigne une unité de poidsThe pound denotes a unit of weight

The common noun names, classifies and organizes the elements of the sentence by its gender, number and function. It imposes agreement of articles and adjectives, while presenting regular, irregular or invariable forms according to usage. Its grammatical value is always read in context, especially when meaning varies with gender or when the form depends on a particular construction.