Ser VS Estar

I am (Ser)

Yo soy

You are (informal) (Ser)

Tú eres

He/she is, you are (formal) (Ser)

él/ella/usted es

We are (Ser)

Nosotros/nosotras somos

You (plural) are (Ser)

Ustedes son

They are (Ser)

ellos/ellas son

You (plural) are (informal, ser)

Vosotros/Vosotras sois

I am from the United States

Yo soy de Estados Unidos

You are American, right?

Tú eres estadounidense, verdad?

We are friends

Nosotros somos amigos

Are you the new teacher?

Usted es la nueva professora?

They are my parents

Ellos son mis papas

You (plural, formal) are tall

Ustedes son altas

is used to talk about physical properties, physical characteristics, personality traits, nationalities, professions, and relationships (permanent)

Ser

You are short (plural, informal)

Vosotros sois bajito

I am (Estar)

Yo estoy

You (informal) are (Estar)

Tú estás

He/she is (Estar)

el/ella está

you (formal) are (Estar)

Usted está

We are (Estar)

Nosotros/nosotras estamos

You are (plural, formal, estar)

Vosotros/Vosotras estáis

You (plural) are (estar)

Ustedes estan

They are (Estar)

Ellos/ellas estan

I am married

Yo estoy casada

We are very tired

Nosotras estamos muy cansadas

Are you sick?

Tu estas enfermo?

How are you? (plural)

Que tal estan ustedes?

Is he angry with you?

El esta enojado contigo?

They are in the office

Ellas estan en la oficina

is used for locations, temporary states that can change (health, feelings, marital status),

Estar