Agreement In some languages, adjectives alter their form to reflect the gender, case and number of the noun that they describe. This is called agreement or concord. Usually it takes the form of inflections at the end of the word, as in Latin: {|border=0 |puella bona ||rowspan=4 style="width:30px"| || (good girl, feminine singular nominative) |- |puellam bonam || (good girl, feminine singular accusative/object case) |- |puer bonus || (good boy, masculine singular nominative) |- |pueri boni || (good boys, masculine plural nominative) |} In Celtic languages, however, initial consonant lenition marks the adjective with a feminine singular noun, as in Irish: {|border=0 |buachaill maith ||rowspan=4 style="width:30px"| || (good boy, masculine) |- |girseach mhaith || (good girl, feminine) |} Here, a distinction may be made between attributive and predicative usage. In English, adjectives never agree, whereas in French, they always agree. In German, they agree only when they are used attributively, and in Hungarian, they agree only when they are used predicatively: {|border=0 |The good (Ø) boys. ||rowspan=4 style="width:30px"| || The boys are good (Ø). |- |Les bons garçons. || Les garçons sont bons. |- |Die braven Jungen. || Die Jungen sind brav (Ø). |- |A jó (Ø) fiúk. || A fiúk jók. |} Semantics Semanticist Barbara Partee classifies adjectives semantically as intersective, subsective, or nonsubsective, with nonsubsective adjectives being plain nonsubsective or privative. An adjective is intersective if and only if the extension of its combination with a noun is equal to the intersection of its extension and that of the noun its modifying. For example, the adjective carnivorous is intersective, given the extension of carnivorous mammal is the intersection of the extensions of carnivorous and mammal (i.e., the set of all mammals who are carnivorous). An adjective is subsective if and only if the extension of its combination with a noun is a subset of the extension of the noun. For example, the extension of skillful surgeon is a subset of the extension of surgeon, but it is not the intersection of that and the extension of skillful, as that would include (for example) incompetent surgeons who are skilled violinists. All subsective adjectives are intersective, but the term 'subsective' is sometimes used to refer to only those subsective adjectives which are not intersective. An adjective is privative if and only if the extension of its combination with a noun is disjoint from the extension of the noun. For example,