supplementation vs increment

supplementation and increment both are nouns.

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

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

Other hypernyms of supplementation include increase.

supplementation (noun)	increment (noun)
the act of supplementing	the amount by which something increases
a quantity added (e.g. to make up for a deficiency)	a process of becoming larger or longer or more numerous or more important