supplement vs supplementation

supplement and supplementation both are nouns.

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

As nouns, supplement and supplementation are synonyms defined as:

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

supplement (noun)	supplementation (noun)
a supplementary component that improves capability	the act of supplementing
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

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