gesticulation vs gesture

gesticulation and gesture both are nouns.

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

As nouns, gesture is a hypernym of gesticulation; that is, gesture is a word with a broader meaning than gesticulation:

gesticulation: a deliberate and vigorous gesture or motion
gesture: the use of movements (especially of the hands) to communicate familiar or prearranged signals

Other hypernyms of gesticulation include motion.

gesticulation (noun)	gesture (noun)
a deliberate and vigorous gesture or motion	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

gesticulation (verb)	gesture (verb)
	show, express or direct through movement