quartz vs vitreous silica

quartz and vitreous silica both are nouns.

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

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

Other synonyms of quartz include crystal, lechatelierite, quartz glass.

quartz (noun)	vitreous silica (noun)
a hard glossy mineral consisting of silicon dioxide in crystal form; present in most rocks (especially sandstone and granite); yellow sand is quartz with iron oxide impurities	colorless glass made of almost pure silica
colorless glass made of almost pure silica