risk taker vs gambler

risk taker and gambler both are nouns.

Word	Noun	Adjective	Verb	Adverb
risk taker	Yes	No	No	No
gambler	Yes	No	No	No

As nouns, risk taker and gambler are synonyms defined as:

risk taker and gambler: someone who risks loss or injury in the hope of gain or excitement

risk taker (noun)	gambler (noun)
someone who risks loss or injury in the hope of gain or excitement	a person who wagers money on the outcome of games or sporting events
	someone who risks loss or injury in the hope of gain or excitement