拥塞

拥塞	yōng sè	to be clogged up / to be congested (traffic, computer network etc)
拥	yōng	to hold in one's arms; to embrace / to surround; to gather around / to throng; to swarm / (bound form) to support (as in 拥护) / (literary) to have; to possess / Taiwan pr. [yong3]
塞	sāi	to plug; to stop up; to stuff in / (bound form) a stopper; a cork
塞	sài	(bound form) strategic stronghold
塞	sè	(bound form) to block; to obstruct