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"Sino" is a form of "sino", a conjunction which is often translated as "but". "Aunque" is a conjunction which is often translated as "even though". Learn more about the difference between "sino" and "aunque" below.
sino(
see
-
noh
)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).
aunque(
owng
-
keh
)A conjunction is a word that connects words, phrases, clauses, or sentences (e.g., The cat and the dog slept.).
a. even though
Aunque está lloviendo, el paisaje está precioso.Even though it's raining, the scenery is beautiful.
b. although
Aunque no quedaba mucho tiempo, terminaron la carrera.Although there wasn't much time left, they finished the race.