brag vs magnify

brag is a noun but magnify is not a noun.

Word	Noun	Adjective	Verb	Adverb
brag	Yes	Yes	Yes	No
magnify	No	No	Yes	No

As verbs, magnify is a hypernym of brag; that is, magnify is a word with a broader meaning than brag:

Other hypernyms of brag include amplify, exaggerate, hyperbolise, hyperbolize, overdraw, overstate.

brag (noun)	magnify (noun)
an instance of boastful talk

brag (adjective)	magnify (adjective)
exceptionally good

brag (verb)	magnify (verb)
show off	increase in size, volume or significance
	make large
	to enlarge beyond bounds or the truth