symbolism vs art movement

symbolism and art movement both are nouns.

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

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

symbolism: an artistic movement in the late 19th century that tried to express abstract or mystical ideas through the symbolic use of images
art movement: a group of artists who agree on general principles

Other hypernyms of symbolism include artistic movement.

symbolism (noun)	art movement (noun)
the practice of investing things with symbolic meaning	a group of artists who agree on general principles
a system of symbols and symbolic representations
an artistic movement in the late 19th century that tried to express abstract or mystical ideas through the symbolic use of images