There are two important differences between CV and Resume: length and place. The ideal resume length is one page. Sometimes, it can be two pages. On the other hand, an ideal CV length is two pages. Sometimes it can be three to five pages. CV is used everywhere except in America. Especially, Asian employers expect CV from their candidates.
The topics of an ideal resume are: Name and communication, Career Summary, Academic Qualification, Employment History, Training Summary, Specializations, Language Proficiency, Personal Information, and Special Achievements (if any).
An ideal CV consists of: Name and communication, personal information (optional), career history, education, publication/grand/fellowship, research and training, professional qualifications, certificates and recognition, awards and publications, extracurricular activities, books and articles, licenses and professional membership, skills, hobbies, references (optional).