動詞. A class of words which describe events or states and can be inflected to indicate tense, aspect, voice, and so forth. In citation form, all Modern Japanese verbs end in -(r)u.
Questions about that class of words which describe events and states and can be inflected or conjugated to indicate relative time, as well as many other nuances.
- adjectives a term used to describe a class of words which describe qualities of nouns, but in the case of Japanese, refers to at least two entirely distinct word classes: descriptive nouns (na-adjectives) and descriptive verbs (i-adjectives).
- copula which behaves grammatically like like a verb in some respects, but is distinct and specialized, like "to be" in English.
- Japanese verb conjugation on English Wikipedia