QUICK ANSWER
"Rifa" is a form of "rifa", a noun which is often translated as "raffle". "Sorteo" is a form of "sorteo", a noun which is often translated as "draw". Learn more about the difference between "rifa" and "sorteo" below.
la rifa(
rree
-
fah
)A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).
1. (draw)
a. raffle
La organización sin ánimo de lucro organizó una rifa para juntar dinero y donarlo a obras benéficas.The non-profit organization organized a raffle to raise money for charity.
a. raffle ticket
¡Perdí la rifa, pero te juro que yo tenía el número que salió premiado!I lost my raffle ticket, but I swear I had the winning number!
el sorteo(
sohr
-
teh
-
oh
)A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).