gesture vs intercommunicate

gesture is a noun but intercommunicate is not a noun.

Word	Noun	Adjective	Verb	Adverb
gesture	Yes	No	Yes	No
intercommunicate	No	No	Yes	No

As verbs, intercommunicate is a hypernym of gesture; that is, intercommunicate is a word with a broader meaning than gesture:

Other hypernyms of gesture include communicate.

gesture (noun)	intercommunicate (noun)
motion of hands or body to emphasize or help to express a thought or feeling
something done as an indication of intention
the use of movements (especially of the hands) to communicate familiar or prearranged signals

gesture (verb)	intercommunicate (verb)
show, express or direct through movement	transmit thoughts or feelings
	be interconnected, afford passage