doggy vs bow-wow

doggy and bow-wow both are nouns.

Word	Noun	Adjective	Verb	Adverb
doggy	Yes	No	No	No
bow-wow	Yes	No	No	No

As nouns, doggy and bow-wow are synonyms defined as:

Other synonyms of doggy include barker, doggie, pooch.

doggy (noun)	bow-wow (noun)
informal terms for dogs	informal terms for dogs
	the bark of a dog