taconite vs chert

taconite and chert both are nouns.

Word	Noun	Adjective	Verb	Adverb
taconite	Yes	No	No	No
chert	Yes	No	No	No

As nouns, chert is a hypernym of taconite; that is, chert 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
chert: variety of silica containing microcrystalline quartz

Other hypernyms of taconite include iron ore.

taconite (noun)	chert (noun)
a variety of chert containing magnetite and hematite; mined as a low-grade iron ore	variety of silica containing microcrystalline quartz