I don't exactly understand the difference between lo que and lo cual and I don't know when I'm supposed to use one or the other. I would sincerely appreciate any answer, especially specific ones. Thank you in advance!|||Both lo que and lo cual can refer back to a sentence or idea, but lo cual is more common for that purpose. Juan trajo una lista de cifras que explicaba su inquietud. Juan trajo una lista de cifras, lo cual/lo que explicaba su inquietud. But only lo que can be used as nominalizer ("the thing that"...) Lo que puede explicar su inquietud es la lista de cifras que Juan trajo.

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