draft copy vs textual matter

draft copy and textual matter both are nouns.

Word	Noun	Adjective	Verb	Adverb
draft copy	Yes	No	No	No
textual matter	Yes	No	No	No

As nouns, textual matter is a hypernym of draft copy; that is, textual matter is a word with a broader meaning than draft copy:

draft copy: any of the various versions in the development of a written work
textual matter: the words of something written

Other hypernyms of draft copy include text.

draft copy (noun)	textual matter (noun)
any of the various versions in the development of a written work	the words of something written