chest vs male chest

chest and male chest both are nouns.

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

As nouns, male chest is a hyponym of chest; that is, male 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
male chest: the chest of a man

Other hyponyms of chest include bust, female chest.

chest (noun)	male chest (noun)
box with a lid; used for storage; usually large and sturdy	the chest of a man
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