haemitin vs hematin

haemitin and hematin both are nouns.

Word	Noun	Adjective	Verb	Adverb
haemitin	Yes	No	No	No
hematin	Yes	No	No	No

As nouns, haemitin and hematin are synonyms defined as:

haemitin and hematin: a complex red organic pigment containing iron and other atoms to which oxygen binds

Other synonyms of haemitin include haem, heme, protoheme.

haemitin (noun)	hematin (noun)
a complex red organic pigment containing iron and other atoms to which oxygen binds	a complex red organic pigment containing iron and other atoms to which oxygen binds