peacock blue vs turquoise

peacock blue and turquoise both are nouns.

Word	Noun	Adjective	Verb	Adverb
peacock blue	Yes	No	No	No
turquoise	Yes	No	No	No

As nouns, peacock blue and turquoise are synonyms defined as:

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

peacock blue (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