aquamarine vs blueness

aquamarine and blueness both are nouns.

Word	Noun	Adjective	Verb	Adverb
aquamarine	Yes	No	No	No
blueness	Yes	No	No	No

As nouns, blueness is a hypernym of aquamarine; that is, blueness is a word with a broader meaning than aquamarine:

aquamarine: a shade of blue tinged with green
blueness: blue color or pigment; resembling the color of the clear sky in the daytime

Other hypernyms of aquamarine include blue.

aquamarine (noun)	blueness (noun)
a shade of blue tinged with green	blue color or pigment; resembling the color of the clear sky in the daytime
a transparent variety of beryl that is blue green in color