taconite vs iron ore

taconite and iron ore both are nouns.

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

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

taconite: a variety of chert containing magnetite and hematite; mined as a low-grade iron ore
iron ore: an ore from which iron can be extracted

Other hypernyms of taconite include chert.

taconite (noun)	iron ore (noun)
a variety of chert containing magnetite and hematite; mined as a low-grade iron ore	an ore from which iron can be extracted