supplement vs end matter

supplement and end matter both are nouns.

Word	Noun	Adjective	Verb	Adverb
supplement	Yes	No	Yes	No
end matter	Yes	No	No	No

supplement (noun)	end matter (noun)
a supplementary component that improves capability	written matter following the main text of a book
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)	end matter (verb)
add to the very end
add as a supplement to what seems insufficient
serve as a supplement to