minimize vs decrease

minimize is not a noun while decrease is a noun.

Word	Noun	Adjective	Verb	Adverb
minimize	No	No	Yes	No
decrease	Yes	No	Yes	No

As verbs, decrease is a hypernym of minimize; that is, decrease is a word with a broader meaning than minimize:

Other hypernyms of minimize include lessen, minify.

minimize (noun)	decrease (noun)
	the act of decreasing or reducing something
	the amount by which something decreases
	a change downward
	a process of becoming smaller or shorter

minimize (verb)	decrease (verb)
make small or insignificant	decrease in size, extent, or range
cause to seem less serious; play down	make become smaller
represent as less significant or important