chiasma vs complex body part

chiasma and complex body part both are nouns.

Word	Noun	Adjective	Verb	Adverb
chiasma	Yes	No	No	No
complex body part	Yes	No	No	No

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

chiasma: an intersection or crossing of two tracts in the form of the letter X
complex body part: a particular complex anatomical part of a living thing and its construction and arrangement

Other hypernyms of chiasma include anatomical structure, bodily structure, body structure, structure.

chiasma (noun)	complex body part (noun)
an intersection or crossing of two tracts in the form of the letter X	a particular complex anatomical part of a living thing and its construction and arrangement