cover version vs recording

cover version and recording both are nouns.

Word	Noun	Adjective	Verb	Adverb
cover version	Yes	No	No	No
recording	Yes	No	No	No

As nouns, recording is a hypernym of cover version; that is, recording is a word with a broader meaning than cover version:

cover version: a recording of a song that was first recorded or made popular by somebody else
recording: a storage device on which information (sounds or images) have been recorded

cover version (noun)	recording (noun)
a recording of a song that was first recorded or made popular by somebody else	the act of making a record (especially an audio record)
	a signal that encodes something (e.g., picture or sound) that has been recorded
	a storage device on which information (sounds or images) have been recorded