Many people mistakenly believe that the process of choosing which applicant to hire for a job is recruitment.  Recruitment is actually the process of obtaining an applicant pool.  So, placing advertisements for an available position would be part of the recruitment process.  Once we have a pool of applicants to choose from, we then move on to the selection process.  Here, we use different methods (e.g., interviews, psychometric tests, assessment centres) in order to choose or select a person for the job.  This therefore is selection.