I totally agree. I'll go further saying I would think of food in general/meal before rice if being told about "nấu cơm" or "ăn cơm".
second point I want to mention, "luyện tập". practice is sometimes translated as "luyện tập", sometimes just "tập". from my own interpretation of it, "luyện tập" is having a practice that demands more determination, effort, concentration. "tập" seems more like a routine practice.