しんしょ【信書】
a letter；〔総称〕correspondence信書の秘密を侵してはならないYou mustn't read other people's personal correspondence.
しんしょ【親書】
a letter written in one's own hand大統領の親書a personal letter from the President
しんしょ【新書】
1〔新刊書〕a new book; a newly-published book2〔双書〕a small-sized paperback (book)新書判a paperback pocket ...
