thorax vs body part

thorax and body part both are nouns.

Word	Noun	Adjective	Verb	Adverb
thorax	Yes	No	No	No
body part	Yes	No	No	No

As nouns, body part is a hypernym of thorax; that is, body part is a word with a broader meaning than thorax:

As nouns, body part is a hypernym of thorax; that is, body part is a word with a broader meaning than thorax:

thorax: the part of the human torso between the neck and the diaphragm or the corresponding part in other vertebrates
body part: any part of an organism such as an organ or extremity

As nouns, body part is a hypernym of thorax; that is, body part is a word with a broader meaning than thorax:

thorax: the middle region of the body of an arthropod between the head and the abdomen
body part: any part of an organism such as an organ or extremity

thorax (noun)	body part (noun)
part of an insect's body that bears the wings and legs	any part of an organism such as an organ or extremity
the part of the human torso between the neck and the diaphragm or the corresponding part in other vertebrates
the middle region of the body of an arthropod between the head and the abdomen