haemoprotein vs hemoprotein

haemoprotein and hemoprotein both are nouns.

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

As nouns, haemoprotein and hemoprotein are synonyms defined as:

haemoprotein and hemoprotein: a conjugated protein linked to a compound of iron and porphyrin

haemoprotein (noun)	hemoprotein (noun)
a conjugated protein linked to a compound of iron and porphyrin	a conjugated protein linked to a compound of iron and porphyrin