Paris green vs yellowish green

Paris green and yellowish green both are nouns.

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

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

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

Paris green (noun)	yellowish 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