Questions & Answers about Esa no me gusta; prefiero la otra.
Esa means that one and is a demonstrative pronoun here. The noun is omitted because it is already understood from context.
For example, if you are looking at two shirts, Esa no me gusta means I don’t like that one.
In modern Spanish, the same forms often work as both:
- demonstrative adjectives: esa camisa = that shirt
- demonstrative pronouns: esa = that one
So esa is standing in for a feminine singular noun.
Because it refers to a feminine singular thing.
Spanish demonstratives must match the noun they refer to:
- este / esta = this
- ese / esa = that
- aquel / aquella = that over there
Examples:
- ese for a masculine noun: ese libro / that book
- esa for a feminine noun: esa chaqueta / that jacket
Eso is different: it refers to an idea, situation, or something unspecified, not usually to a specific named noun.