Caprichosa translates to "capricious" or "whimsical". It's a less common, yet very descriptive word that adds a unique flavor to the lyrics.
In the song, Arcangel uses it to describe his beloved as "Mi niña caprichosa" (My capricious girl). This implies she might be a bit unpredictable, perhaps a little demanding or prone to sudden changes of mood, but in an endearing way that makes her even more captivating to him. It paints a vivid picture of a complex and interesting personality.
"La Distancia" is Arcangel trying to work out why she left, and honestly, he blames himself more than you might expect from a reggaeton song. The hook keeps circling the same guesses: "No sé si fue la distancia, o tal vez culpa de mi ignorancia" (I don't know if it was the distance, or maybe the fault of my ignorance), and then "mi inmadurez" (my immaturity). He never picks one answer, which is exactly how a breakup feels.
The verses swing between sweet-talk and memory. She's his "muñeca preciosa" (precious doll) and "niña caprichosa" (fussy, headstrong girl), being with her felt like "un jardín de rosa'" (a rose garden), and he remembers "aquella navidad" (that Christmas) when they kissed "solo por curiosidad" (just out of curiosity), a cute little detail. Then comes the plea: he's ready "a brindarte mi corazón" (to offer you my heart) and swears there won't be another mistake. Watch for "el nene" (the boy), which is him talking about himself. The outro is pure shout-outs: Luny Tunes, Tainy and Flow Factory are producers and his crew, and "La Maravilla" (The Wonder) is one of Arcangel's own nicknames.