modifier vs qualifier

modifier and qualifier both are nouns.

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

As nouns, modifier and qualifier are synonyms defined as:

modifier and qualifier: a content word that qualifies the meaning of a noun or verb

modifier (noun)	qualifier (noun)
a gene that modifies the effect produced by another gene	a content word that qualifies the meaning of a noun or verb
a content word that qualifies the meaning of a noun or verb	a contestant who meets certain requirements and so qualifies to take part in the next stage of competition
a person who changes something
a moderator who makes less extreme or uncompromising