Page "Grammatical conjugation" Paragraph 1

In linguistics, conjugation is the creation of derived forms of a verb from its principal parts by inflection ( regular alteration according to rules of grammar ).

Conjugation may be affected by person, number, gender, tense, aspect, mood, voice, or other grammatical categories.

All the different forms of the same verb constitute a lexeme and the form of the verb that is conventionally used to represent the canonical form of the verb ( one as seen in dictionary entries ) is a lemma.

Inflection of nouns and adjectives is known as declension.