The word 概念 is formed by combining two characters, each contributing a fundamental layer of meaning to create a new, abstract idea. The first character, 概, originally pertains to a measuring instrument or a standard, conveying a sense of a general outline, essential point, or comprehensive scope. The second character, 念, represents thought, contemplation, or an idea held in the mind. When fused, 概念 synthesizes these notions to mean "concept", essentially, the general, foundational idea or mental outline formed through contemplation and understanding.