The Chinese word 沸腾 (fèiténg), meaning "to boil" or "to be in a state of intense excitement", is a typical example of a coordinated compound (并列式). It is formed by combining two characters with closely related meanings: 沸 (fèi), which specifically means "to boil" or "bubbling", and 腾 (téng), which conveys the sense of "rising", "soaring", or "surging upward". Together, they create a vivid, synergistic image of a liquid bubbling and rising with heat, which has been extended metaphorically to describe fervent emotions or a lively atmosphere, thus enriching the semantic scope beyond either character alone.