In some languages, there is no distinction between adjectives (defined semantically) and verbs in terms of their morphological and syntactic behavior, while other languages treat the two categories as distinct word classes.

Types:

AdjNotVMorph: Adjectives are distinct from verbs in their morphological and syntactic behavior.

CopAdj=VMorph: Adjectives are not verbs, but in predicative position, they can display verbal affixes used in copular function.

Adj=VMorph: Adjectives are verbs and display verbal morphology: for example, inflection for categories such as tense, aspect, mood, person, and number.[1]

Adj=VNoMorph: Adjectives are verbs and, like verbs, display no inflection.[2]

[1] If this value applies, adjectives, like verbs, can only appear as predicates, making adjectives functionally nonexistent in the language, since they bear no syntactic or morphological distinction from verbs. Verbs that would be considered adjectives in other languages can only be identified by considering their semantic content.

[2] If this value applies, adjectives, like verbs, can only appear as non-inflectional predicates, making adjectives functionally nonexistent in the language, since they bear no syntactic or morphological distinction from verbs. Verbs that would be considered adjectives in other languages can only be identified by considering their semantic content.