West

서 = west
서양 = the west
서해 = the west(ern) sea

Book, papers, writing

서점 = bookstore
독서(하다) = reading, read books
도서 = books
교과서 = textbook, schoolbook
서류 = documents, papers
보고서 = (written) report
신청서 = written application, application form
이력서 = resume
추천서 = letter of recommendation
증명서 = certificate, testimonial
엽서 = postcard
낙서(하다) = scribble, scrawl, doodle, graffiti