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"Cual" is a pronoun which is often translated as "which", and "lo cual" is a phrase which is also often translated as "which". Learn more about the difference between "cual" and "lo cual" below.
cual(
kwahl
)A pronoun is a word that stands in for a noun (e.g., she).
1. (relative)
lo cual(
loh
kwahl
)A phrase is a group of words commonly used together (e.g., once upon a time).