distinctive feature vs peculiarity

distinctive feature and peculiarity both are nouns.

Word	Noun	Adjective	Verb	Adverb
distinctive feature	Yes	No	No	No
peculiarity	Yes	No	No	No

As nouns, distinctive feature and peculiarity are synonyms defined as:

Other synonyms of distinctive feature include distinguishing characteristic.

distinctive feature (noun)	peculiarity (noun)
an odd or unusual characteristic	something unusual -- perhaps worthy of collecting
	a distinguishing trait
	an odd or unusual characteristic