cyan vs teal

cyan and teal both are nouns.

Word	Noun	Adjective	Verb	Adverb
cyan	Yes	Yes	No	No
teal	Yes	Yes	No	No

As nouns, teal is a hypernym of cyan; that is, teal is a word with a broader meaning than cyan:

Other hypernyms of cyan include blue green, bluish green.

cyan (noun)	teal (noun)
a primary subtractive color for light; has a blue-green color	any of various small short-necked dabbling river ducks of Europe and America
	a blue-green color or pigment

cyan (adjective)	teal (adjective)
of the blue-green color that is a primary subtractive color of light	of a bluish shade of green