minimisation vs reduction

minimisation and reduction both are nouns.

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

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

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

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

minimisation (noun)	reduction (noun)
the act of reducing something to the least possible amount or degree or position	the act of decreasing or reducing something
	the act of reducing complexity
	any process in which electrons are added to an atom or ion (as by removing oxygen or adding hydrogen); always occurs accompanied by oxidation of the reducing agent