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
Chocolate is 'chokoreeto' in Japanese.
Dog in Japanese is 'inu'.
Domo.
Koibito.
Sakarerumono
Owari
Hajime mashite?
Yonbanme
何 (nani)