fibrocartilage vs cartilage

fibrocartilage and cartilage both are nouns.

Word	Noun	Adjective	Verb	Adverb
fibrocartilage	Yes	No	No	No
cartilage	Yes	No	No	No

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

fibrocartilage: cartilage that is largely composed of fibers like those in ordinary connective tissue
cartilage: tough elastic tissue; mostly converted to bone in adults

Other hypernyms of fibrocartilage include gristle.

fibrocartilage (noun)	cartilage (noun)
cartilage that is largely composed of fibers like those in ordinary connective tissue	tough elastic tissue; mostly converted to bone in adults