peplus vs peplos

peplus and peplos both are nouns.

Word	Noun	Adjective	Verb	Adverb
peplus	Yes	No	No	No
peplos	Yes	No	No	No

As nouns, peplus and peplos are synonyms defined as:

peplus and peplos: a garment worn by women in ancient Greece; cloth caught at the shoulders and draped in folds to the waist

Other synonyms of peplus include peplum.

peplus (noun)	peplos (noun)
a garment worn by women in ancient Greece; cloth caught at the shoulders and draped in folds to the waist	a garment worn by women in ancient Greece; cloth caught at the shoulders and draped in folds to the waist