中和違った漢字

把握 (はあく）
Japanese: to grasp, understand.
Chinese: (literally: handhold, grip) confidence.

深刻 (しんこく）
Japanese: serious, grave (i.e. serious problem)
Chinese: deep, indelible (i.e. deep impression)

披露　（ひろう）
Japanese: introduction.
Chinese: flashing (i.e. being an exhibitionist)

Here are a few kanji within Japanese, with the same sounds but interestingly different meanings:

父（ちち, father) and 乳 (chichi, milk or breast)
誇り（ほこり, pride) and 埃 (hokori, dust)