supplementation vs supplement

supplementation and supplement both are nouns.

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

As nouns, supplementation and supplement are synonyms defined as:

supplementation and supplement: a quantity added (e.g. to make up for a deficiency)

supplementation (noun)	supplement (noun)
the act of supplementing	a supplementary component that improves capability
a quantity added (e.g. to make up for a deficiency)	a quantity added (e.g. to make up for a deficiency)
	textual matter that is added onto a publication; usually at the end

supplementation (verb)	supplement (verb)
	add to the very end
	add as a supplement to what seems insufficient
	serve as a supplement to