chlorophyll c vs chlorophyll

chlorophyll c and chlorophyll both are nouns.

Word	Noun	Adjective	Verb	Adverb
chlorophyll c	Yes	No	No	No
chlorophyll	Yes	No	No	No

As nouns, chlorophyll is a hypernym of chlorophyll c; that is, chlorophyll is a word with a broader meaning than chlorophyll c:

chlorophyll c: the chlorophyll present in brown algae, diatoms, and flagellates
chlorophyll: any of a group of green pigments found in photosynthetic organisms; there are four naturally occurring forms

Other hypernyms of chlorophyll c include chlorophyl.

chlorophyll c (noun)	chlorophyll (noun)
the chlorophyll present in brown algae, diatoms, and flagellates	any of a group of green pigments found in photosynthetic organisms; there are four naturally occurring forms