abuse vs child abuse

abuse and child abuse both are nouns.

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

As nouns, child abuse is a hyponym of abuse; that is, child abuse is a word with a more specific, narrower meaning than abuse:

Other hyponyms of abuse include child neglect, persecution, cruelty, inhuman treatment.

abuse (noun)	child abuse (noun)
improper or excessive use	the physical or emotional or sexual mistreatment of children
cruel or inhumane treatment
a rude expression intended to offend or hurt

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