schoolbook vs text

schoolbook and text both are nouns.

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

As nouns, schoolbook and text are synonyms defined as:

Other synonyms of schoolbook include school text, text edition, textbook.

schoolbook (noun)	text (noun)
a book prepared for use in schools or colleges	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

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