peace sign vs peace symbol

peace sign and peace symbol both are nouns.

Word	Noun	Adjective	Verb	Adverb
peace sign	Yes	No	No	No
peace symbol	Yes	No	No	No

As nouns, peace sign and peace symbol are synonyms defined as:

peace sign and peace symbol: a symbol that represents peace, in the form of three lines within a circle.

peace sign (noun)	peace symbol (noun)
a symbol that represents peace, in the form of three lines within a circle.	a symbol that represents peace, in the form of three lines within a circle.