silicon oxide vs chert

silicon oxide and chert both are nouns.

Word	Noun	Adjective	Verb	Adverb
silicon oxide	Yes	No	No	No
chert	Yes	No	No	No

As nouns, chert is a hyponym of silicon oxide; that is, chert is a word with a more specific, narrower meaning than silicon oxide:

silicon oxide: a white or colorless vitreous insoluble solid (SiO2); various forms occur widely in the earth's crust as quartz or cristobalite or tridymite or lechatelierite
chert: variety of silica containing microcrystalline quartz

Other hyponyms of silicon oxide include flint, silex.

silicon oxide (noun)	chert (noun)
a white or colorless vitreous insoluble solid (SiO2); various forms occur widely in the earth's crust as quartz or cristobalite or tridymite or lechatelierite	variety of silica containing microcrystalline quartz