pyrrhotite vs pyrrhotine

pyrrhotite and pyrrhotine both are nouns.

Word	Noun	Adjective	Verb	Adverb
pyrrhotite	Yes	No	No	No
pyrrhotine	Yes	No	No	No

As nouns, pyrrhotite and pyrrhotine are synonyms defined as:

pyrrhotite and pyrrhotine: a brownish iron sulfide mineral (FeS) having weak magnetic properties

Other synonyms of pyrrhotite include magnetic pyrites.

pyrrhotite (noun)	pyrrhotine (noun)
a brownish iron sulfide mineral (FeS) having weak magnetic properties	a brownish iron sulfide mineral (FeS) having weak magnetic properties