Verified answer

Este: masculine singular (adjective) --> Este libro==this book

Estos: masculine plural (adjective) --> Estos libros==these books

Esta: feminine singular (adjective) --> Esta silla==this chair

Estas: feminine plural (adjective) --> Estas sillas==these chairs

Éste: masculine singular (pronoun) --> this one

Éstos: masculine plural (pronoun) --> these ones

Ésta: feminine singular (pronoun) --> this one

Éstas: feminine plural (pronoun) --> these ones

Ese: masculine singular (adjective) --> Ese libro==that book

Esos: masculine plural (adjective) --> Esos libros ==those books

Esa: feminine singular (adjective) --> Esa silla==that chair

Esas: feminine plural (adjective) --> Esas sillas==those chairs

Ése: masculine singular (pronoun) --> that one

Ésos: masculine plural (pronoun) --> those ones

Ésas: feminine plural (pronoun) --> those ones

Ésas: feminine plural (pronoun) --> those ones

Eso: neutral singular --> Qué es eso?==that thing

The plural is "esos" --> Qué son esos?

Esto: neutral singular --> Qué es esto?==this thing

The plural is "estos" --> Qué son estos?

Or:

Éste is the Spanish word for this. You can use it when you are showing something to somebody.

Éste es mi dormitorio. This is my bedroom.

As usual in Spanish there are different words depending on the thing you're indicating. Éste goes with the masculine nouns and ésta with the feminine ones.

Ésta es la cocina. This is the kitchen.

For the plurals you use éstos and éstas.

Éstos son los dormitorios. These are the bedrooms.

Esto is used to talk about things you don't know the name of.

¿Qué es esto? What is this?

It all depends on how your using them