qualifier vs adverb

qualifier and adverb both are nouns.

Word	Noun	Adjective	Verb	Adverb
qualifier	Yes	No	No	No
adverb	Yes	No	No	No

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

Other hyponyms of qualifier include intensifier, intensive, adjective, dangling modifier, misplaced modifier.

qualifier (noun)	adverb (noun)
a content word that qualifies the meaning of a noun or verb	a word that modifies something other than a noun
a contestant who meets certain requirements and so qualifies to take part in the next stage of competition	the word class that qualifies verbs or clauses