开球

开球	kāi qiú	open ball (math.) / to start a ball game / to kick off (soccer) / to tee off (golf)
开	kāi	to open (transitive or intransitive) / (of ships, vehicles, troops etc) to start / to turn on; to put in operation; to operate; to run / to boil / to write out (a prescription, check, invoice etc) / (directional complement) away; off / carat (gold) / abbr. for Kelvin, 开尔文 / abbr. for 开本, book format
球	qiú	ball used for playing games (variant of 球)
球	qiú	ball / sphere / globe / CL:个 / ball game / match / CL:场