camp meeting vs meeting

camp meeting and meeting both are nouns.

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

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

camp meeting: religious (usually evangelistic) meeting held in a large tent or outdoors and lasting several days
meeting: a formally arranged gathering

Other hypernyms of camp meeting include group meeting.

camp meeting (noun)	meeting (noun)
religious (usually evangelistic) meeting held in a large tent or outdoors and lasting several days	the social act of assembling for some common purpose
	the act of joining together as one
	a casual or unexpected convergence
	a formally arranged gathering
	a small informal social gathering
	a place where things merge or flow together (especially rivers)