Question

Which of the following applications does NOT belong to "ser?"

Answer 1

There are a handful of situations where we would use ESTAR instead of SER.

They both mean "to be,"
but in totally different ways.

Some situations in which we would use ESTAR (and not SER) are when...

we're talking about the weather
(Está lloviendo -- It is raining.)

we're talking about our feelings
(Estoy triste -- I am sad.)

we're talking about our location
(Estoy en la biblioteca -- I am in the library.)

we're talking about the location of someone or something else
(Ella está en la tienda -- She is in the store.)

we're talking about an action that is happening right now
(Estoy corriendo -- I am running.)

Answer 2

NATIONALITY