Why are usted and tengo interchangable ?

Question

For example I could say "tango sed or tengo frio" or I could say "estoy enferma" or "estoy feliz".

Is one form formal and the other informal ?

Answer 1

Hi and welcome to the forum.

You are confusing two very different words that are not related (Usted and Tener). Did you mean to say "Tener" and "Estar" are similar when discussing conditions and emotions?

I could say "tango sed or tengo frio" or I could say "estoy enferma" or "estoy feliz".

Tengo sed = I am thirsty

Tengo frio = I am cold

Estoy enfermo = I am sick

Estoy feliz = I am happy

Is one form formal and the other informal ?

Formal and informal come into play when conjugating verbs and who you are talking about or to.

¿Cómo está usted? = How are you (formal)

¿Cómo estás? = How are you (informal)

¿Tiene sed? = Are you thirsty? (formal)

¿Tienes sed? = Are you thirsty? (informal)