peace offering vs olive branch

peace offering and olive branch both are nouns.

Word	Noun	Adjective	Verb	Adverb
peace offering	Yes	No	No	No
olive branch	Yes	No	No	No

As nouns, peace offering and olive branch are synonyms defined as:

peace offering and olive branch: something offered to an adversary in the hope of obtaining peace

peace offering (noun)	olive branch (noun)
something offered to an adversary in the hope of obtaining peace	something offered to an adversary in the hope of obtaining peace