zircon vs hyacinth

zircon and hyacinth both are nouns.

Word	Noun	Adjective	Verb	Adverb
zircon	Yes	No	No	No
hyacinth	Yes	No	No	No

As nouns, hyacinth is a hyponym of zircon; that is, hyacinth is a word with a more specific, narrower meaning than zircon:

zircon: a common mineral occurring in small crystals; chief source of zirconium; used as a refractory when opaque and as a gem when transparent
hyacinth: a red transparent variety of zircon used as a gemstone

Other hyponyms of zircon include jacinth, jargon, jargoon.

zircon (noun)	hyacinth (noun)
a common mineral occurring in small crystals; chief source of zirconium; used as a refractory when opaque and as a gem when transparent	any of numerous bulbous perennial herbs
	a red transparent variety of zircon used as a gemstone