vs
QUICK ANSWER
"Si" is a form of "si", a conjunction which is often translated as "if". "Fa" is a noun which is often translated as "F". Learn more about the difference between "si" and "fa" 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).
el fa(
fah
)A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
1. (music)
a. F
El estribillo solamente tiene dos acordes: do séptima mayor y fa.The chorus only has two chords: Cmaj7 and F.
b. fa (in solfège)
La melodía termina así: fa, fa, mi, re, do.The melody ends like this: fa, fa, mi, re, do.