情熱 | Passionate! Although pretty far from how we’d use that word in English:the Japanese version means “dedicated, hardworking, diligent.” Example: 彼女は熱心な学生 = She’s a passionate student. |
熱心 | Passion – usually used about sports or performances:They praised the actor’s passionate performance. She’s passionate about her hobby. |
恋 | Romantic passion. |