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"Sábados" is a form of "sábado", a noun which is often translated as "Saturday". "Tarea" is a noun which is often translated as "homework". Learn more about the difference between "tarea" and "sábados" below.
la tarea()
A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).
1. (education)
a. homework
Termina tu tarea de francés antes de irte a jugar.Finish your French homework before you go play.
el sábado()
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
a. Saturday
El sábado es el mejor día de la semana porque no hay escuela.Saturday is the best day of the week because there's no school.