short sale vs short selling

short sale and short selling both are nouns.

Word	Noun	Adjective	Verb	Adverb
short sale	Yes	No	No	No
short selling	Yes	No	No	No

As nouns, short sale and short selling are synonyms defined as:

short sale and short selling: sale of securities or commodity futures not owned by the seller (who hopes to buy them back later at a lower price)

short sale (noun)	short selling (noun)
sale of securities or commodity futures not owned by the seller (who hopes to buy them back later at a lower price)	sale of securities or commodity futures not owned by the seller (who hopes to buy them back later at a lower price)