Curriculum Vitae in short CV is often called Resume and Bio-Data. Effective resume or CV writing is key skill for getting an interview call in your job searching process. Your CV makes the first impression on the potential employer. Your CV must be relevant, well-presented, clearly communicated, grammatically correct, condensed and highlight your strengths within reasonable length. Good CV is an art that every job seeker must master.
Cover Letter is the top sheet. Anything that you want to say that, such as how you are distinct from other candidates or what benefits you can bring to the organization, what do you know about their organization etc, provides you edge over other candidates.
There is no standard format for CV or Cover Letter. It depends on the Job you are applying for and matter in your mind.