cytochrome vs haemoprotein

cytochrome and haemoprotein both are nouns.

Word	Noun	Adjective	Verb	Adverb
cytochrome	Yes	No	No	No
haemoprotein	Yes	No	No	No

As nouns, haemoprotein is a hypernym of cytochrome; that is, haemoprotein is a word with a broader meaning than cytochrome:

cytochrome: (biochemistry) a class of hemoprotein whose principal biological function is electron transfer (especially in cellular respiration)
haemoprotein: a conjugated protein linked to a compound of iron and porphyrin

Other hypernyms of cytochrome include hemoprotein.

cytochrome (noun)	haemoprotein (noun)
(biochemistry) a class of hemoprotein whose principal biological function is electron transfer (especially in cellular respiration)	a conjugated protein linked to a compound of iron and porphyrin