cubism vs art movement

cubism and art movement both are nouns.

Word	Noun	Adjective	Verb	Adverb
cubism	Yes	No	No	No
art movement	Yes	No	No	No

As nouns, art movement is a hypernym of cubism; that is, art movement is a word with a broader meaning than cubism:

cubism: an artistic movement in France beginning in 1907 that featured surfaces of geometrical planes
art movement: a group of artists who agree on general principles

Other hypernyms of cubism include artistic movement.

cubism (noun)	art movement (noun)
an artistic movement in France beginning in 1907 that featured surfaces of geometrical planes	a group of artists who agree on general principles