An interview means a face to face interaction between the interviewer and the candidates. Interviews generally need a preparation. Interviews have a definite structure. Clear communication should take place during an interview. All interviews have a definite purpose familiar to the interviewer and the candidate.
Basic Suggestions for the Interview
Your body language should be positive during the interview, i.e., maintain an eye-to-eye contact with the interviewer, sit in well and smile when appropriate, etc.