verb vs frequentative

verb and frequentative both are nouns.

Word	Noun	Adjective	Verb	Adverb
verb	Yes	No	No	No
frequentative	Yes	No	No	No

As nouns, frequentative is a hyponym of verb; that is, frequentative is a word with a more specific, narrower meaning than verb:

verb: a content word that denotes an action, occurrence, or state of existence
frequentative: a verb form that serves to express frequent repetition of an action

verb (noun)	frequentative (noun)
a content word that denotes an action, occurrence, or state of existence	a verb form that serves to express frequent repetition of an action
the word class that serves as the predicate of a sentence