One of your tasks in an academic paper is to define your key terms. You should specifically tell the reader what you mean by key words that you are using. The criteria for defining key words included:
Scope: for example, if you are writing about education, what is the scope? Education in the whole world, or just Canada?
Kind: what kind of education are you writing about? High school and university? Or just elementary school?
Limitations: what will you NOT be including in your discussion? Let's say you are writing on elementary education in Canada (kind and scope), but you are not addressing the sciences, just the education of humanities.
Writing about media bias will be the same: what is your scope, kind, and limitation?
Share your concepts here!