missive vs text

missive and text both are nouns.

Word	Noun	Adjective	Verb	Adverb
missive	Yes	No	No	No
text	Yes	No	Yes	No

As nouns, text is a hypernym of missive; that is, text is a word with a broader meaning than missive:

Other hypernyms of missive include document, textual matter.

missive (noun)	text (noun)
a written message addressed to a person or organization	the words of something written
	the main body of a written work (as distinct from illustrations or footnotes etc.)
	a book prepared for use in schools or colleges
	a passage from the Bible that is used as the subject of a sermon

missive (verb)	text (verb)
	to send a message by SMS or similar text-based messaging service