arytenoid cartilage vs gristle

arytenoid cartilage and gristle both are nouns.

Word	Noun	Adjective	Verb	Adverb
arytenoid cartilage	Yes	No	No	No
gristle	Yes	No	No	No

As nouns, gristle is a hypernym of arytenoid cartilage; that is, gristle is a word with a broader meaning than arytenoid cartilage:

arytenoid cartilage: either of two small cartilages at the back of the larynx to which the vocal folds are attached
gristle: tough elastic tissue; mostly converted to bone in adults

Other hypernyms of arytenoid cartilage include cartilage.

arytenoid cartilage (noun)	gristle (noun)
either of two small cartilages at the back of the larynx to which the vocal folds are attached	tough elastic tissue; mostly converted to bone in adults