Gypsum (CaSO4.2H2O) is very similar to Anhydrite (CaSO4). The chemical difference is that gypsum contains two waters and anhydrite is without water. Gypsum is the most common sulfate mineral. Gypsum wallboard and plaster: Wallboard and construction plaster are the primary industrial uses of gypsum in the United States.
Hoshi (æ) is a Japanese word which means star. It is also a surname. Hoshi (ä¿å¿) is a Japanese surname with a similar pronunciation. HÅshi (æ³å¸«) is unrelated to the preceding words, and pronounced differently. It is a technical term in Buddhism (see below).
Katakana is a Japanese syllabary, one component of the Japanese writing system along with hiragana, kanji, and in some cases the Latin script. The word katakana means fragmentary kana, as the katakana characters are derived from components of more complex kanji. Katakana and hiragana are both kana systems. With one or two minor exceptions, each syllable in the Japanese language is represented by one character, or kana, in each system. Each kana is either a vowel such as a; a consonant follow