chastise vs chasten

chastise and chasten both are verbs.

Word	Noun	Adjective	Verb	Adverb
chastise	No	No	Yes	No
chasten	No	No	Yes	No

As verbs, chastise and chasten are synonyms defined as:

Other synonyms of chastise include castigate, correct, objurgate.

chastise (verb)	chasten (verb)
censure severely	change by restraining or moderating
	correct by punishment or discipline
	censure severely