minimisation vs decrease

minimisation and decrease both are nouns.

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

As nouns, decrease is a hypernym of minimisation; that is, decrease is a word with a broader meaning than minimisation:

minimisation: the act of reducing something to the least possible amount or degree or position
decrease: the act of decreasing or reducing something

Other hypernyms of minimisation include diminution, reduction, step-down.

minimisation (noun)	decrease (noun)
the act of reducing something to the least possible amount or degree or position	the act of decreasing or reducing something
	the amount by which something decreases
	a change downward
	a process of becoming smaller or shorter

minimisation (verb)	decrease (verb)
	decrease in size, extent, or range
	make become smaller