Difference between case study and interview?

[Safayet hossain]

Recently,I have noticed that some blogger writes case study and interview in their blog.

But,I do not understand what is difference between two terms.


Please,define this two terms.

 

[T J Tutor]

Case Study: A complete report on a project. For example, in marketing, a case study of a campaign.

Interview: A formal meeting in which one or more persons question, consult, or evaluate another person.