sexual abstention vs chastity

sexual abstention and chastity both are nouns.

Word	Noun	Adjective	Verb	Adverb
sexual abstention	Yes	No	No	No
chastity	Yes	No	No	No

As nouns, sexual abstention and chastity are synonyms defined as:

sexual abstention and chastity: abstaining from sexual relations (as because of religious vows)

Other synonyms of sexual abstention include celibacy.

sexual abstention (noun)	chastity (noun)
abstaining from sexual relations (as because of religious vows)	abstaining from sexual relations (as because of religious vows)
	morality with respect to sexual relations