通婚

通婚	tōng hūn	to intermarry
通	tōng	to go through / to know well / (suffix) expert / to connect / to communicate / open / to clear / classifier for letters, telegrams, phone calls etc
通	tòng	classifier for an activity, taken in its entirety (tirade of abuse, stint of music playing, bout of drinking etc)
婚	hūn	(bound form) marriage; wedding / (bound form) to marry