Ash Can vs artistic movement

Ash Can and artistic movement both are nouns.

Word	Noun	Adjective	Verb	Adverb
Ash Can	Yes	No	No	No
artistic movement	Yes	No	No	No

As nouns, artistic movement is a hypernym of Ash Can; that is, artistic movement is a word with a broader meaning than Ash Can:

Ash Can: early 20th-century United States painting; portrays realistic and sordid scenes of city life
artistic movement: a group of artists who agree on general principles

Other hypernyms of Ash Can include art movement.

Ash Can (noun)	artistic movement (noun)
early 20th-century United States painting; portrays realistic and sordid scenes of city life	a group of artists who agree on general principles