开课

开课	kāi kè	school begins / give a course / teach a subject
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
课	kè	subject / course / CL:门 / class / lesson / CL:堂,节 / to levy / tax / form of divination