同轴

同轴	tóng zhóu	coaxial
同	tóng	like / same / similar / together / alike / with
同	tòng	see 胡同
轴	zhóu	axis / axle / spool (for thread) / roller (for scrolls) / classifier for calligraphy rolls etc
轴	zhòu	see 压轴戏 / Taiwan pr. [zhou2]