citrine vs quartz

citrine and quartz both are nouns.

Word	Noun	Adjective	Verb	Adverb
citrine	Yes	No	No	No
quartz	Yes	No	No	No

As nouns, quartz is a hypernym of citrine; that is, quartz is a word with a broader meaning than citrine:

citrine: semiprecious yellow quartz resembling topaz
quartz: 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

Other hypernyms of citrine include transparent gem.

citrine (noun)	quartz (noun)
semiprecious yellow quartz resembling topaz	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