aqua vs turquoise

aqua and turquoise both are nouns.

Word	Noun	Adjective	Verb	Adverb
aqua	Yes	No	No	No
turquoise	Yes	No	No	No

As nouns, aqua and turquoise are synonyms defined as:

Other synonyms of aqua include aquamarine, cobalt blue, greenish blue, peacock blue.

aqua (noun)	turquoise (noun)
a shade of blue tinged with green	a shade of blue tinged with green
	a blue to grey green mineral consisting of copper aluminum phosphate