arb vs arbitrager

arb and arbitrager both are nouns.

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

As nouns, arb and arbitrager are synonyms defined as:

arb and arbitrager: 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 arb include arbitrageur.

arb (noun)	arbitrager (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)