The family name Pook is written in Japanese in a katakana phonetic translation using the characters “pu” and “ku”. Katakana (Jap. 片仮名 or カタカナ) is a syllabary, a set of symbols that represent syllables. Besides hiragana, it is the second Japanese syllabary. Each katakana symbol stands as a syllabogram either for a vowel or a consonant with the following vowel. Since my wife is Japanese and my children are half Japanese I am trying to learn this language.