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"La tarea" is a form of "tarea", a noun which is often translated as "homework". "Por favor" is a phrase which is often translated as "please". Learn more about the difference between "la tarea" and "por favor" below.
la tarea(
tah
-
reh
-
ah
)A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).
1. (education)
a. homework 
La profesora de francés les dio mucha tarea.The French teacher gave them lots of homework.
por favor( 
pohr
fah
-
bohr
)A phrase is a group of words commonly used together (e.g., once upon a time).