pinnacle vs acme

pinnacle and acme both are nouns.

Word	Noun	Adjective	Verb	Adverb
pinnacle	Yes	No	Yes	No
acme	Yes	No	No	No

As nouns, pinnacle and acme are synonyms defined as:

pinnacle and acme: the highest level or degree attainable; the highest stage of development

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

pinnacle (noun)	acme (noun)
(architecture) a slender upright spire at the top of a buttress or tower	the highest point (of something)
a lofty peak	the highest level or degree attainable; the highest stage of development
the highest level or degree attainable; the highest stage of development

pinnacle (verb)	acme (verb)
raise on or as if on a pinnacle
surmount with a pinnacle