tell on vs denounce

tell on and denounce both are verbs.

Word	Noun	Adjective	Verb	Adverb
tell on	No	No	Yes	No
denounce	No	No	Yes	No

As verbs, tell on and denounce are synonyms defined as:

Other synonyms of tell on include betray, give away, grass, rat, shit, shop, snitch, stag.

tell on (verb)	denounce (verb)
produce an effect or strain on somebody	speak out against
give away information about somebody	give away information about somebody
	announce the termination of, as of treaties
	to accuse or condemn or openly or formally or brand as disgraceful