chow vs chow chow

chow and chow chow both are nouns.

Word	Noun	Adjective	Verb	Adverb
chow	Yes	No	No	No
chow chow	Yes	No	No	No

As nouns, chow and chow chow are synonyms defined as:

chow and chow chow: breed of medium-sized dogs with a thick coat and fluffy curled tails and distinctive blue-black tongues; believed to have originated in northern China

chow (noun)	chow chow (noun)
breed of medium-sized dogs with a thick coat and fluffy curled tails and distinctive blue-black tongues; believed to have originated in northern China	breed of medium-sized dogs with a thick coat and fluffy curled tails and distinctive blue-black tongues; believed to have originated in northern China
informal terms for a meal