crawfish vs crawdaddy

crawfish and crawdaddy both are nouns.

Word	Noun	Adjective	Verb	Adverb
crawfish	Yes	No	Yes	No
crawdaddy	Yes	No	No	No

As nouns, crawfish and crawdaddy are synonyms defined as:

crawfish and crawdaddy: small freshwater decapod crustacean that resembles a lobster

Other synonyms of crawfish include crawdad, crayfish.

crawfish (noun)	crawdaddy (noun)
large edible marine crustacean having a spiny carapace but lacking the large pincers of true lobsters	small freshwater decapod crustacean that resembles a lobster
small freshwater decapod crustacean that resembles a lobster
tiny lobster-like crustaceans usually boiled briefly

crawfish (verb)	crawdaddy (verb)
make a retreat from an earlier commitment or activity