QUICK ANSWER
"Agotador" is an adjective which is often translated as "exhausting", and "cansador" is an adjective which is often translated as "tiring". Learn more about the difference between "agotador" and "cansador" below.
agotador(
ah
-
goh
-
tah
-
dohr
)An adjective is a word that describes a noun (e.g. the big dog).
1. (tiring)
a. exhausting
Hoy he estado trabajando sin parar; ha sido un día realmente agotador.I've been working non-stop all day; it's been a really exhausting day.