supplementation vs increase

supplementation and increase both are nouns.

Word	Noun	Adjective	Verb	Adverb
supplementation	Yes	No	No	No
increase	Yes	No	Yes	No

As nouns, increase is a hypernym of supplementation; that is, increase is a word with a broader meaning than supplementation:

Other hypernyms of supplementation include increment.

supplementation (noun)	increase (noun)
the act of supplementing	the act of increasing something
a quantity added (e.g. to make up for a deficiency)	the amount by which something increases
	a change resulting in an increase
	a process of becoming larger or longer or more numerous or more important
	a quantity that is added

supplementation (verb)	increase (verb)
	become bigger or greater in amount
	make bigger or more