hen vs cackler

hen and cackler both are nouns.

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

As nouns, cackler is a hyponym of hen; that is, cackler is a word with a more specific, narrower meaning than hen:

Other hyponyms of hen include brood hen, broody, broody hen, setting hen, sitter, mother hen, layer, pullet.

hen (noun)	cackler (noun)
adult female chicken	a hen that has just laid an egg and emits a shrill squawk
adult female bird	any of various insectivorous Old World birds with a loud incessant song; in some classifications considered members of the family Muscicapidae
female of certain aquatic animals e.g. octopus or lobster
flesh of an older chicken suitable for stewing