Postimpressionist vs Post-impressionist

Postimpressionist and Post-impressionist both are nouns.

Word	Noun	Adjective	Verb	Adverb
Postimpressionist	Yes	No	No	No
Post-impressionist	Yes	No	No	No

As nouns, Postimpressionist and Post-impressionist are synonyms defined as:

Postimpressionist and Post-impressionist: an artist of the Postimpressionist school who revolted against Impressionism

Postimpressionist (noun)	Post-impressionist (noun)
an artist of the Postimpressionist school who revolted against Impressionism	an artist of the Postimpressionist school who revolted against Impressionism