sapphire vs corundom

sapphire and corundom both are nouns.

Word	Noun	Adjective	Verb	Adverb
sapphire	Yes	Yes	No	No
corundom	Yes	No	No	No

As nouns, corundom is a hypernym of sapphire; that is, corundom is a word with a broader meaning than sapphire:

sapphire: a precious transparent stone of rich blue corundum valued as a gemstone
corundom: very hard mineral used as an abrasive

Other hypernyms of sapphire include corundum, transparent gem.

sapphire (noun)	corundom (noun)
a light shade of blue	very hard mineral used as an abrasive
a transparent piece of sapphire that has been cut and polished and is valued as a precious gem
a precious transparent stone of rich blue corundum valued as a gemstone

sapphire (adjective)	corundom (adjective)
of something having the color of a blue sapphire