Paris green vs pea green

Paris green and pea green both are nouns.

Word	Noun	Adjective	Verb	Adverb
Paris green	Yes	No	No	No
pea green	Yes	No	No	No

As nouns, Paris green and pea green are synonyms defined as:

Other synonyms of Paris green include chartreuse, yellow green, yellowish green.

Paris green (noun)	pea green (noun)
a shade of green tinged with yellow	a shade of green tinged with yellow
a toxic double salt of copper arsenate and copper acetate