paper clip vs paperclip

paper clip and paperclip both are nouns.

Word	Noun	Adjective	Verb	Adverb
paper clip	Yes	No	No	No
paperclip	Yes	No	No	No

As nouns, paper clip and paperclip are synonyms defined as:

paper clip and paperclip: a wire or plastic clip for holding sheets of paper together

Other synonyms of paper clip include gem clip.

paper clip (noun)	paperclip (noun)
a wire or plastic clip for holding sheets of paper together	a wire or plastic clip for holding sheets of paper together