peace symbol vs symbol

peace symbol and symbol both are nouns.

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

As nouns, symbol is a hypernym of peace symbol; that is, symbol is a word with a broader meaning than peace symbol:

peace symbol: a symbol that represents peace, in the form of three lines within a circle.
symbol: an arbitrary sign (written or printed) that has acquired a conventional significance

peace symbol (noun)	symbol (noun)
a symbol that represents peace, in the form of three lines within a circle.	something visible that by association or convention represents something else that is invisible
	an arbitrary sign (written or printed) that has acquired a conventional significance