substance abuse vs abuse

substance abuse and abuse both are nouns.

Word	Noun	Adjective	Verb	Adverb
substance abuse	Yes	No	No	No
abuse	Yes	No	Yes	No

As nouns, abuse is a hypernym of substance abuse; that is, abuse is a word with a broader meaning than substance abuse:

Other hypernyms of substance abuse include misuse.

substance abuse (noun)	abuse (noun)
excessive use of drugs	improper or excessive use
	cruel or inhumane treatment
	a rude expression intended to offend or hurt

substance abuse (verb)	abuse (verb)
	change the inherent purpose or function of something
	use wrongly or improperly or excessively
	use foul or abusive language towards
	treat badly