A case study is an in-depth analysis of a particular situation or event. It typically involves research into the background of the situation, as well as interviews with people involved in the event. The term 'case study' can refer to a TRIAL, GRAMMAR, or LAW. A TRIAL case study is an examination of a legal dispute between two parties, while a GRAMMAR case study looks at the structure and usage of language. Finally, a LAW case study examines the application of a particular LAW to a specific situation.