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"These" is an adjective which is often translated as "estos", and "this" is a pronoun which is often translated as "este". Learn more about the difference between "these" and "this" below.
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.
this(
thihs
)A pronoun is a word that stands in for a noun (e.g., she).
d. así
Is this enough for you or would you like a bigger piece?¿Así te llega o quieres un trozo más grande?
An adjective is a word that describes a noun (e.g., the big dog).
a. este (masculine)
This winter has been the coldest one in twenty years.Este invierno ha sido el más frío en veinte años.