arbitrageur vs arb

arbitrageur and arb both are nouns.

Word	Noun	Adjective	Verb	Adverb
arbitrageur	Yes	No	No	No
arb	Yes	No	No	No

As nouns, arbitrageur and arb are synonyms defined as:

arbitrageur and arb: someone who engages in arbitrage (who purchases securities in one market for immediate resale in another in the hope of profiting from the price differential)

Other synonyms of arbitrageur include arbitrager.

arbitrageur (noun)	arb (noun)
someone who engages in arbitrage (who purchases securities in one market for immediate resale in another in the hope of profiting from the price differential)	someone who engages in arbitrage (who purchases securities in one market for immediate resale in another in the hope of profiting from the price differential)