chest vs female chest

chest and female chest both are nouns.

Word	Noun	Adjective	Verb	Adverb
chest	Yes	No	No	No
female chest	Yes	No	No	No

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

chest: the part of the human torso between the neck and the diaphragm or the corresponding part in other vertebrates
female chest: the chest of a woman

Other hyponyms of chest include bust, male chest.

chest (noun)	female chest (noun)
box with a lid; used for storage; usually large and sturdy	the chest of a woman
furniture with drawers for keeping clothes
the part of the human torso between the neck and the diaphragm or the corresponding part in other vertebrates
the front of the trunk from the neck to the abdomen