meeting vs occasion

meeting and occasion both are nouns.

Word	Noun	Adjective	Verb	Adverb
meeting	Yes	No	No	No
occasion	Yes	No	Yes	No

As nouns, occasion is a hypernym of meeting; that is, occasion is a word with a broader meaning than meeting:

Other hypernyms of meeting include affair, function, social affair, social function, social gathering, social occasion.

meeting (noun)	occasion (noun)
the social act of assembling for some common purpose	an event that occurs at a critical time
the act of joining together as one	a formal or official social gathering or ceremony of people
a casual or unexpected convergence	a rational motive for a belief or action
a formally arranged gathering	an opportunity to do something
a small informal social gathering	the time of a particular event
a place where things merge or flow together (especially rivers)

meeting (verb)	occasion (verb)
	give occasion to