come across vs communicate

come across and communicate both are verbs.

Word	Noun	Adjective	Verb	Adverb
come across	No	No	Yes	No
communicate	No	No	Yes	No

As verbs, communicate is a hypernym of come across; that is, communicate is a word with a broader meaning than come across:

Other hypernyms of come across include intercommunicate.

come across (verb)	communicate (verb)
be received or understood	transmit thoughts or feelings
communicate the intended meaning or impression	transmit information
come together	be in verbal contact; interchange information or ideas
be perceived in a certain way; make a certain impression	receive Communion, in the Catholic church
find unexpectedly	administer Communion; in church
	join or connect
	transfer to another