modifier vs intensifier

modifier and intensifier both are nouns.

Word	Noun	Adjective	Verb	Adverb
modifier	Yes	No	No	No
intensifier	Yes	No	No	No

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

modifier: a content word that qualifies the meaning of a noun or verb
intensifier: a modifier that has little meaning except to intensify the meaning it modifies

Other hyponyms of modifier include intensive, adjective, adverb, dangling modifier, misplaced modifier.

modifier (noun)	intensifier (noun)
a gene that modifies the effect produced by another gene	a modifier that has little meaning except to intensify the meaning it modifies
a content word that qualifies the meaning of a noun or verb
a person who changes something
a moderator who makes less extreme or uncompromising