art deco vs artistic movement

art deco and artistic movement both are nouns.

Word	Noun	Adjective	Verb	Adverb
art deco	Yes	No	No	No
artistic movement	Yes	No	No	No

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

art deco: a style of design that was popular in the 1920s and 1930s; marked by stylized forms and geometric designs adapted to mass production
artistic movement: a group of artists who agree on general principles

Other hypernyms of art deco include art movement.

art deco (noun)	artistic movement (noun)
a style of design that was popular in the 1920s and 1930s; marked by stylized forms and geometric designs adapted to mass production	a group of artists who agree on general principles