People use the words RESUME, C.V., and BIO-DATA interchangeably for the document highlighting skills, education, and experience that a candidate submits when applying for a job. On the surface level, all the three mean the same. However, there are intricate differences.
RESUME
Resume Is a French  word meaning "summary", and true to the word meaning, signifies a summary of  one's employment, education, and other skills, used in applying for a new  position. A resume seldom exceeds one side of an A4 sheet, and at the most two  sides. They do not list out all the education and qualifications, but only  highlight specific skills customized to target the job profile in question.
A  resume is usually broken into bullets and written in the third person to appear  objective and formal. A good resume starts with a brief Summary of  Qualifications, followed by Areas of Strength or Industry Expertise in keywords,  followed by Professional Experience in reverse chronological order. Focus is on  the most recent experiences, and prior experiences summarized. The content aims  at providing the reader a balance of responsibilities and accomplishments for  each position. After
Work experience come Professional Affiliations, Computer  Skills, and
Education
C.V CURRICULUM VITAE
C.V Is a Latin word meaning "course of  life". Curriculum Vitae (C.V.) is therefore a regular or particular course of  study pertaining to education and life. A C.V. is more detailed than a resume,  usually 2 to 3 pages, but can run even longer as per the requirement. A C.V.  generally lists out every skills, jobs, degrees, and  professional
affiliations the applicant has acquired, usually in  chronological order. A C.V. displays general talent rather than specific skills  for any specific positions.
BIO-DATA
Bio Data the short form  for Biographical Data, is the old-fashioned terminology for Resume or C.V. The  emphasis in a bio data is on personal particulars like date of birth, religion,  sex, race, nationality, residence, martial status, and the like. Next comes a  chronological listing of education and experience. The things normally found in  a resume, that is specific skills for the job in question comes last, and
are  seldom included. Bio-data also includes applications made in specified formats  as required by the company. 
A resume is ideally suited when  applying for middle and senior level positions, where experience and specific  skills rather than education is important. A C.V., on the other hand is the  preferred option for fresh graduates, people looking for a career change, and  those applying for academic positions. The term bio-data is mostly used in India  while applying to government jobs, or when applying for research grants and  other situations where one has to submit descriptive essays. 
Resumes present a summary of  highlights and allow the prospective employer to scan through the document  visually or electronically, to see if your skills match their available  positions. A good resume can do that very effectively, while a C.V. cannot. A  bio-data could still perform this role, especially if the format happens to be  the one
recommended by the employer.  
Personal information such as age,  sex, religion and others, and hobbies are never mentioned in a resume. Many  people include such particulars in the C.V. However, this is neither required  nor considered in the US market.. A Bio-data, on the other hand always include  such personal