hen vs biddy

hen and biddy both are nouns.

Word	Noun	Adjective	Verb	Adverb
hen	Yes	No	No	No
biddy	Yes	No	No	No

As nouns, hen and biddy are synonyms defined as:

hen (noun)	biddy (noun)
adult female chicken	young bird especially of domestic fowl
adult female bird	adult female chicken
female of certain aquatic animals e.g. octopus or lobster
flesh of an older chicken suitable for stewing