愛書[aisho] great love of books
愛読書[aidokusho] favourite book
悪書[akusho] harmful book
案内書[annaisho] guidebook
移動図書館[idoutoshokan] mobile library

遺言書[yuigonsho] testament
遺書[isho] note left by dead person
医書[isho] medical book
一つ書き[hitotsugaki] an item
一書[issho] one letter

に違いない[nichigainai] I am sure
違い[chigai] difference
違う[chigau] to differ (from)
違える[chigaeru] to change
違憲[iken] unconstitutionality

違算[isan] miscalculation
違式[ishiki] informality
違背[ihai] violation
違犯者[ihansha] violator (of a law)
違犯[ihan] violation (of law)