告知（こくち）：notice; announcement

告：announce; inform; revelation; tell

on-reading コク. kun-reading つげる.

告げる（つげる）：to inform; to tell; to ring (bell, alarm, warning, etc.)

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知：know; wisdom

on-reading チ. kun-reading しらせる、しる

知らせる（しらせる）：to notify; to advise; to inform

知る（しる）：to know; to understand; to be acquainted with; to feel