Nihongo, written as 日本語
If you want to say Japanese person, it's nihonjin, or 日本人
In Japanese is;
nihongo de
This can be translated as "I like [the] Japanese [language]."
"Kankokugo" is Korean (language) in Japanese. It is written as: 韓国語
White when translated from English to Japanese is shiro for shiro means white
Dog in Japanese is 'inu'.
Chocolate is 'chokoreeto' in Japanese.
Owari
Domo.
Koibito.
Sakarerumono
Yonbanme
何 (nani)
Hajime mashite?