As I am learning chinese I know that hanzi has two forms simplified and traditional, but what about Kanji?
Could a native japanese or native chinese understand the meaning of the written characters that matches with the actual meaning?
*edit : title should be How similar are hanzi and kanji (漢子)?
If written with alphabet, Kanji and hanzi look different. But for ourselves (Japanese and Chinese), 漢字 is 漢字. It makes no difference although pronunciations are different.
Historically, Japanese people didn't have their own characters for the first time. So they borrow the characters from China and express themselves with it. Korean people and Vietnamese people also did so. So that these four countries had used same characters "漢字"(Chinese pronunciation: hanzi. Japanese pronunciation: kanji. Korean pronunciation: hancha. Vietnamese pronunciation : hantu).
Korean people invented their own character "hangul(한글)" in 15th century and 漢字 is abolished now. Vietnamese people also made their own characters though, now they use alphabets in consequence of French invasion. Only Chinese and Japanese keep using 漢字 until now.
I'm not sure the character "漢子" is correct. Maybe you mean "漢字" ?
Anyway, Kanji (In Japanese) as the pronciation, is similar with Hanzi (in Chinese). Cuz their culture is close if you trace back to the old days. It is like English and German, they share a lot of similar words with same meaning and they also have their own words.
It is all about the liguistics.