supplement vs constitute

supplement is a noun but constitute is not a noun.

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

As verbs, constitute is a hypernym of supplement; that is, constitute is a word with a broader meaning than supplement:

Other hypernyms of supplement include be, comprise, make up, represent.

supplement (noun)	constitute (noun)
a supplementary component that improves capability
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)	constitute (verb)
add to the very end	set up or lay the groundwork for
add as a supplement to what seems insufficient	create and charge with a task or function
serve as a supplement to	form or compose
	to compose or represent