mountain peak vs summit

mountain peak and summit both are nouns.

Word	Noun	Adjective	Verb	Adverb
mountain peak	Yes	No	No	No
summit	Yes	No	Yes	No

As nouns, summit is a hypernym of mountain peak; that is, summit is a word with a broader meaning than mountain peak:

Other hypernyms of mountain peak include crest, crown, peak, tip, top.

mountain peak (noun)	summit (noun)
the summit of a mountain	a meeting of heads of governments
	the top or extreme point of something (usually a mountain or hill)
	the highest level or degree attainable; the highest stage of development

mountain peak (verb)	summit (verb)
	reach the summit (of a mountain)