vs
QUICK ANSWER
"Si" is a form of "si", a conjunction which is often translated as "if". "Es cierto" is a form of "es cierto", a phrase which is often translated as "it's true". Learn more about the difference between "si" and "es cierto" below.
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).
es cierto(
ehs
syehr
-
toh
)A phrase is a group of words commonly used together (e.g., once upon a time).
