In linguistics, grammatical gender is a specific form of the nominal class system in which the division of noun classes forms a system of agreement with another aspect of language, such as adjectives, articles, pronouns, or verbs. Some authors use the term “grammatical gender” as a synonym for “nominal class,” while others use different definitions for each. Many authors prefer “nominal classes” when none of the inflections of a language are related to gender. The gender system is used in about a quarter of the world`s languages. In these languages, most or all names inherently carry a value of the grammatical category called gender;  Values present in a particular language (there are usually two or three) are called genders of that language. According to one definition: “Genders are classes of nouns that are reflected in the behavior of associated words.”    In this experiment, we studied the mechanisms associated with gender labeling by asking participants to assess the grammatical acceptance of sentences that violate gender equality under various conditions. The reason for this is that the more acceptable the wrong agreement is considered in each condition, the higher the acceptance rating. Conditions varied by gender (female vs. male) and number (one vs.
two) of speakers. We also included a simple plural condition in which there was only one plural speaker (female or male). This condition allows us to deal with breaches of contract directly with affiliated IPs (e.B. il bicchiere e il cappello “the glass and the hat”) and infringements with plural nouns (e.B. i bicchieri “the glasses”). Both conditions require a correspondence in the plural, but only the first involves the integration of different sexual characteristics through nouns. On the other hand, the correspondence of a plural noun – as is the case with a singular noun – involves only one lexical node. In this way, it can be verified whether individual plural lexical entries are treated as a combination of two singular lexical entries with respect to the unification process.
In some languages, the gender of a name is directly determined by its physical characteristics (gender, animacy, etc.), and there are few or no exceptions to this rule. There are relatively few such languages. Dravidian languages use this system as described below. Research shows that the early stages of Proto-Indo-European had two sexes (animate and inanimate), as did the Hittites, the first attested Indo-European language. The classification of names based on animation and inanimate and lack of gender are characteristic of armenian today. .