QUICK ANSWER
"Puesto que" is a conjunction which is often translated as "since", and "ya que" is a phrase which is also often translated as "since". Learn more about the difference between "puesto que" and "ya que" below.
puesto que(
pwehs
-
toh
keh
)A conjunction is a word that connects words, phrases, clauses, or sentences (e.g., The cat and the dog slept.).
1. (general)
a. since
Puesto que está lloviendo, no vamos a ir a nadar hoy.Since it's raining, we're not going swimming today.
b. given that
Puesto que está nevando, puede ser que quieras ponerte botas.Given that it's snowing, you might want to wear boots.
c. because
Puesto que cancelaron las clases, vamos al cine.Because classes were canceled, we're going to the movies.
d. as
Deberíamos luchar por el control del congreso, puesto que queremos lograr una reforma.We should fight for control of Congress, as we want to get a reform bill passed.
ya que(
yah
keh
)A phrase is a group of words commonly used together (e.g., once upon a time).
1. (because)