insult vs abuse

insult and abuse both are nouns.

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

As nouns, insult and abuse are synonyms defined as:

Other synonyms of insult include contumely, revilement, vilification.

insult (noun)	abuse (noun)
a deliberately offensive act or something producing the effect of deliberate disrespect	improper or excessive use
a rude expression intended to offend or hurt	cruel or inhumane treatment
	a rude expression intended to offend or hurt

insult (verb)	abuse (verb)
treat, mention, or speak to rudely	change the inherent purpose or function of something
	use wrongly or improperly or excessively
	use foul or abusive language towards
	treat badly