sing vs divulge

sing and divulge both are verbs.

Word	Noun	Adjective	Verb	Adverb
sing	No	No	Yes	No
divulge	No	No	Yes	No

As verbs, divulge is a hypernym of sing; that is, divulge is a word with a broader meaning than sing:

sing: divulge confidential information or secrets
divulge: make known to the public information that was previously known only to a few people or that was meant to be kept a secret

Other hypernyms of sing include break, bring out, disclose, discover, expose, give away, let on, let out, reveal, uncover, unwrap.

sing (verb)	divulge (verb)
make a whining, ringing, or whistling sound	make known to the public information that was previously known only to a few people or that was meant to be kept a secret
divulge confidential information or secrets
to make melodious sounds
produce tones with the voice
deliver by singing