clothes pin vs clothes peg

clothes pin and clothes peg both are nouns.

Word	Noun	Adjective	Verb	Adverb
clothes pin	Yes	No	No	No
clothes peg	Yes	No	No	No

As nouns, clothes pin and clothes peg are synonyms defined as:

clothes pin and clothes peg: wood or plastic fastener; for holding clothes on a clothesline

Other synonyms of clothes pin include clothespin.

clothes pin (noun)	clothes peg (noun)
wood or plastic fastener; for holding clothes on a clothesline	wood or plastic fastener; for holding clothes on a clothesline