peak vs summit

peak and summit both are nouns.

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

As nouns, peak and summit are synonyms defined as:

peak and summit: the top or extreme point of something (usually a mountain or hill)

Other synonyms of peak include crest, crown, tip, top.

As nouns, peak and summit are synonyms defined as:

peak and summit: the highest level or degree attainable; the highest stage of development

Other synonyms of peak include acme, elevation, height, meridian, pinnacle, superlative, tiptop, top.

peak (noun)	summit (noun)
a brim that projects to the front to shade the eyes	a meeting of heads of governments
the top or extreme point of something (usually a mountain or hill)	the top or extreme point of something (usually a mountain or hill)
the highest point (of something)	the highest level or degree attainable; the highest stage of development
the most extreme possible amount or value
a V shape
the highest level or degree attainable; the highest stage of development
the period of greatest prosperity or productivity

peak (verb)	summit (verb)
to reach the highest point; attain maximum intensity, activity	reach the summit (of a mountain)