"科学" (かがく) refers to science, which is the systematic study of the natural and physical world through observation and experimentation, leading to the formation and testing of theories. It seeks to understand how the world works. For instance, "科学の授業が好きです" (I like science class).

自然や物理の世界を研究する学問です。実験や観察を行います。例：理科の科学。