vs
QUICK ANSWER
"This" is a pronoun which is often translated as "este", and "these" is an adjective which is often translated as "estos". Learn more about the difference between "this" and "these" below.
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.
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.