Japanese is written in a mixture of Kanji, Katakana, and Hiragana.
It can be written: 日本の文化
It is most often written as: フランス
If "Mery" is a proper name, non-Japanese names are written in Japanese using the phonetic script, which can only approximate English sounds, since many English language sounds do not exist in Japanese. The word "Mery' doesn't exist in the English language. Maybe checking for spelling mistakes in your question would help. The English word "Merry" is "陽気な" when written in Japanese script, or "Yōkina" when in European script. The English word "Mercy" is "慈悲" when written in Japanese script, or "Jihi" when in European script.
It can be written: ジェレミー
It may be written using Kanji (traditional pictograms), Katakana (simplified pictograms), or Hiragana (syllable script).
The verb "to walk" is 'aruku' in Japanese, written: 歩く If you're referring to "walks" in the sense of "I like taking walks" or "strolls," then you may say 'sanpo,' written: 散歩
水
Japanese is written in five scripts: kanji, hiragana, katakana, romanji, and furigana. Each script serves a different purpose in the written language.
ボリューム
犬
Script refers to a written text. A script contains the written text of a stage play, movie, or broadcast.
アイデンティティ Aidentiti