vitreous silica vs lechatelierite

vitreous silica and lechatelierite both are nouns.

Word	Noun	Adjective	Verb	Adverb
vitreous silica	Yes	No	No	No
lechatelierite	Yes	No	No	No

As nouns, vitreous silica and lechatelierite are synonyms defined as:

vitreous silica and lechatelierite: colorless glass made of almost pure silica

Other synonyms of vitreous silica include crystal, quartz, quartz glass.

vitreous silica (noun)	lechatelierite (noun)
colorless glass made of almost pure silica	colorless glass made of almost pure silica