kyanite vs cyanite

kyanite and cyanite both are nouns.

Word	Noun	Adjective	Verb	Adverb
kyanite	Yes	No	No	No
cyanite	Yes	No	No	No

As nouns, kyanite and cyanite are synonyms defined as:

kyanite and cyanite: a grey or greenish-blue mineral consisting of aluminum silicate in crystalline form; occurs in metaphoric rock, used as a refractory

kyanite (noun)	cyanite (noun)
a grey or greenish-blue mineral consisting of aluminum silicate in crystalline form; occurs in metaphoric rock, used as a refractory	a grey or greenish-blue mineral consisting of aluminum silicate in crystalline form; occurs in metaphoric rock, used as a refractory