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"Those" is an adjective which is often translated as "esos", and "these" is an adjective which is often translated as "estos". Learn more about the difference between "those" and "these" below.
those(
thoz
)An adjective is a word that describes a noun (e.g., the big dog).
b. esas (before feminine noun)
Those pens are mine, but you can borrow them.Esas plumas son mías, pero te las presto.
c. aquellos (before masculine noun)
Those buildings look so small from this height.Aquellos edificios se ven tan pequeños desde esta altura.
d. aquellas (before feminine noun)
I don't want these strawberries. I want those over there by the exit.No quiero estas fresas. Quiero aquellas que están allí por la salida.
A pronoun is a word that stands in for a noun (e.g., she).
a. esos (in place of masculine noun)
I don't want the red shoes; I want those.No quiero los zapatos rojos; quiero esos.
b. esas (in place of feminine noun)
Those aren't the boxes I asked you for.Esas no son las cajas que te pedí.
c. aquellos (in place of masculine noun)
Those are just as good as these.Aquellos son tan buenos como estos.
d. aquellas (in place of feminine noun)
Those always have more seeds than these apples.Aquellas siempre tienen más semillas que estas manzanas.
these(
thiz
)An adjective is a word that describes a noun (e.g., the big dog).
a. estos (masculine)
These toys aren't going to put themselves away.Estos juguetes no se van a guardar ellos solos.
b. estas (feminine)
I want these compositions finished by ten.Quiero que estas redacciones estén acabadas para las diez.
A pronoun is a word that stands in for a noun (e.g., she).
a. estos (masculine)
Which cars do you mean? - These over here.¿A qué coches se refiere? - A estos de aquí.