Resume is a French word meaning “summary”.
A resume is ideally a summary of one’s education, skills and employment when applying for a new job. A resume does not list out all details of a profile, but only some specific skills customized to the target job profile. It thus, is usually 1 or at the max 2 pages long.
Curriculum Vitae is a Latin word meaning “course of life”.
It is more detailed than a resume, generally 2 to 3 pages, or even longer as per the requirement. A C.V. lists out every skill, all the jobs and positions held, degrees, professional affiliations the applicant has acquired, and in chronological order. A C.V. is used to highlight the general talent of the candidate rather than specific skills for a specific position.
In a bio data, the focus is on personal particulars like date of birth, gender, religion, race, nationality, residence, marital status, and the like.