vs 

QUICK ANSWER
"Si" is a form of "si", a conjunction which is often translated as "if". "Tú puedes" is a form of "tú puedes", a phrase which is often translated as "you can". Learn more about the difference between "si" and "tú puedes" below.
si(
see
)
A conjunction is a word that connects words, phrases, clauses, or sentences (e.g., The cat and the dog slept.).
conjunction
a. if
Si llueve mañana, cancelaremos el pícnic.If it rains tomorrow, we will cancel the picnic.
a. whether
Preguntó si me estaba divirtiendo.He asked whether I was enjoying myself.
b. if
Paco quiere saber si Laura también va a asistir.Paco wants to know if Laura is also going to attend.
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
masculine noun
a. B
Primero lo oí en si menor.I first heard it played in B minor.
b. ti (solfége)
Practiquemos las escalas en orden inverso: do, si, la...Let's practice scales in reverse order: do, ti, la...
Copyright © 2025 Dictionary Media Group, Inc.
tú puedes(
too
 
pweh
-
dehs
)
A phrase is a group of words commonly used together (e.g., once upon a time).
phrase
1.
A word or phrase used to refer to the second person informal “tú” by their conjugation or implied context (e.g., How are you?).
(informal)
(you're capable of; second person singular)
a. you can
Tú puedes hablar bien español. Solo tienes que practicar.You can speak Spanish well. You only need to practise.
b. you're able to
Tú puedes hacerlo si te esfuerzas.You're able to do it if you make an effort.
2.
A word or phrase used to refer to the second person informal “tú” by their conjugation or implied context (e.g., How are you?).
(informal)
(you can achieve it; second person singular)
a. you can do it
¡Ánimo! ¡Tú puedes!Come on! You can do it!
3.
A word or phrase used to refer to the second person informal “tú” by their conjugation or implied context (e.g., How are you?).
(informal)
(you have permission to; second person singular)
a. you can
Tú puedes irte ya, Álvaro.You can leave now, Alvaro.
b. you may
Tú puedes venir a verme cuando quieras.You may come to see me any time you want.
Copyright © 2025 Dictionary Media Group, Inc.