info vs subject matter

info and subject matter both are nouns.

Word	Noun	Adjective	Verb	Adverb
info	Yes	No	No	No
subject matter	Yes	No	No	No

As nouns, subject matter is a hypernym of info; that is, subject matter is a word with a broader meaning than info:

Other hypernyms of info include content, message, substance.

info (noun)	subject matter (noun)
a message received and understood	content communicating a message; what something is about