Difference Between Job Profile, Job Discription, Job Spacification

Dear Seniors,
Please give the definition of the Job Profile, Job Description, and job Spacification. Please help me by giving the definition.
waiting for the reply.
Thanking you,
Devansh

Job Description
It is a written statement listing the elements of a particular job or occupation. eg duties to be done, qualification required, equipment used reporting structure etc.
Job Specification
Minimum KSAs (Knowledge Skills & Abitily) required to perform the job effectively.

Job profile can be defined as a combination of Role and Function ( E.g. Head of Department - Marketing, Head of Department - Software).Here Role is Head of department and function is marketing .Job profile means briefly classifying the role in the organization which consists of his role, function, band, grade, salary band, Designation,Qualification. Job description, position Required and to whom he is reporting to.:icon1:
May be this may help u.