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"Porque" is a form of "porque", a conjunction which is often translated as "because". "Pues" is a conjunction which is often translated as "then". Learn more about the difference between "porque" and "pues" below.
porque(
pohr
-
keh
)A conjunction is a word that connects words, phrases, clauses, or sentences (e.g., The cat and the dog slept.).
a. because
Mi hermano está triste porque no ganó el concurso.My brother is upset because he did not win the contest.
pues(
pwehs
)A conjunction is a word that connects words, phrases, clauses, or sentences (e.g., The cat and the dog slept.).
a. then
Estoy cansado. - Pues vete a dormir.I am tired. - Go to sleep then.
No sé qué decirte, pues.I don't know what to tell you, then.
2. (emphatic)