sexual abuse vs sex crime

sexual abuse and sex crime both are nouns.

Word	Noun	Adjective	Verb	Adverb
sexual abuse	Yes	No	No	No
sex crime	Yes	No	No	No

As nouns, sexual abuse and sex crime are synonyms defined as:

sexual abuse and sex crime: a statutory offense that provides that it is a crime to knowingly cause another person to engage in an unwanted sexual act by force or threat

Other synonyms of sexual abuse include sex offense, sexual assault.

sexual abuse (noun)	sex crime (noun)
a statutory offense that provides that it is a crime to knowingly cause another person to engage in an unwanted sexual act by force or threat	a statutory offense that provides that it is a crime to knowingly cause another person to engage in an unwanted sexual act by force or threat