vs
QUICK ANSWER
"Si" is a form of "si", a conjunction which is often translated as "if". "Usted" is a pronoun which is often translated as "you". Learn more about the difference between "usted" and "si" below.
usted(
oos
-
tehd
)A pronoun is a word that stands in for a noun (e.g., she).
1. (formal) (second person singular)
A word or phrase used to refer to the second person formal “usted” by their conjugation or implied context (e.g., usted).
ustedes
A pronoun is a word that stands in for a noun (e.g., she).
2. (second person plural) (Latin America)
Regionalism used in Latin America: all the countries in South America, Central America, and the Caribbean. Does not include Spain.
3. (formal) (second person plural) (Spain)
A word or phrase used to refer to the second person formal “usted” by their conjugation or implied context (e.g., usted).
Regionalism used in Spain
a. you
Ustedes pueden dejar sus chaquetas en el vestuario y seguirme al comedor.You may leave your jackets in the coatroom and follow me to the dining room.
si(
see
)A conjunction is a word that connects words, phrases, clauses, or sentences (e.g., The cat and the dog slept.).
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
