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"Porqué" is a form of "porqué", a noun which is often translated as "reason". "Si" is a form of "si", a conjunction which is often translated as "if". Learn more about the difference between "porqué" and "si" below.
el porqué(
pohr
-
keh
)A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
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).