The Japanese use kanji
ナ?ツソナスナ。 = ナ?ツソ : kan which means sino-;China / ナスナ。= ji which means character,letter,word
It means Chinese character thus
汉ナスナ。 = 汉: yi4 han4 which means Chinese people;Chinese language / ナスナ。 : zi which means character,letter
so it's just the same, except Chinese use nothing BUT hanzi, and the Japanese which call it Kanji use only a few thousand of them.So they are pretty much the same yes, that's why a lot of kanji have the same meaning in Chinese as in Japanese
That's because there are more Chinese pronounciations for the same word

the usage is the same as the Japanese their romaji