qualifier vs intensive

qualifier and intensive both are nouns.

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

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

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

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

qualifier (noun)	intensive (noun)
a content word that qualifies the meaning of a noun or verb	a modifier that has little meaning except to intensify the meaning it modifies
a contestant who meets certain requirements and so qualifies to take part in the next stage of competition

qualifier (adjective)	intensive (adjective)
	of agriculture; intended to increase productivity of a fixed area by expending more capital and labor
	tending to give force or emphasis
	characterized by a high degree or intensity; often used as a combining form