chondrichthian vs cartilaginous fish

chondrichthian and cartilaginous fish both are nouns.

Word	Noun	Adjective	Verb	Adverb
chondrichthian	Yes	No	No	No
cartilaginous fish	Yes	No	No	No

As nouns, chondrichthian and cartilaginous fish are synonyms defined as:

chondrichthian and cartilaginous fish: fishes in which the skeleton may be calcified but not ossified

chondrichthian (noun)	cartilaginous fish (noun)
fishes in which the skeleton may be calcified but not ossified	fishes in which the skeleton may be calcified but not ossified