hematite vs iron ore

hematite and iron ore both are nouns.

Word	Noun	Adjective	Verb	Adverb
hematite	Yes	No	No	No
iron ore	Yes	No	No	No

As nouns, iron ore is a hypernym of hematite; that is, iron ore is a word with a broader meaning than hematite:

hematite: the principal form of iron ore; consists of ferric oxide in crystalline form; occurs in a red earthy form
iron ore: an ore from which iron can be extracted

hematite (noun)	iron ore (noun)
the principal form of iron ore; consists of ferric oxide in crystalline form; occurs in a red earthy form	an ore from which iron can be extracted