better, bettor

Better or better is the comparative ( more than ) form of "good"--
This pizza is better than the one we had last week.
"May the better man win."
He is better at math since he took that course.
It would be better to take the highway.

Bettor or bettor means a person engaged in gambling, or one who has placed a wager--
Each bettor must show a driver's license, state-issued I.D., or passport.
The bettor became nervous as the roulette wheel came to a stop.

Now that you know that, you can say--
"Odds of winning are better if the bettor doesn't display emotion."

Note--"better" is used in the expression "had better", meaning "it would be better if you"--
You had better stop that, young man.
We had better go home now.
Not to be confused with "had better", meaning, literally, "had better", as in used or enjoyed a preferable or superior example--
How's the pizza? I've had better. We had better pizza last week.

Note--"abettor" ( one word, derived from "abet" ) means someone who aids in the commission of a crime--
He may be charged as an abettor in the bank robbery.
Not to be confused with "a bettor" ( two words ), meaning one who makes a wager--
Is that man a bettor, or only a spectator?
Not to be confused with "a better", meaning the comparative form of "good"--
We had a better pizza last week.