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"Si" is a form of "si", a conjunction which is often translated as "if". "¡Claro que sí!" is an interjection which is often translated as "Of course!". Learn more about the difference between "si" and "¡Claro que sí!" 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).
¡Claro que sí!(
klah
-
roh
keh
see
)An interjection is a short utterance that expresses emotion, hesitation, or protest (e.g., Wow!).