For each class, buy a separate notebook from the one you 
    take your notes in. I recommend a "composition" or spiral 
    notebook, not a looseleaf notebook, for your "permanent" 
    (i.e., re-written) notes.

Would somebody please explain to me the difference between these two types of notebooks? I understand that 'spiral notebook' means a notebook whose spline contains a plastic-springlike-thingy, and therefore is able to open flat-180-degrees.

But, whats meant by 'composition notebook'? and 'looseleaf notebook'?