deco vs art movement

deco and art movement both are nouns.

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

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

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

Other hypernyms of deco include artistic movement.

deco (noun)	art 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