What do the words "presentation", "representation" mean?

To me, "representation" refers to the way in which a piece of work is created.  It is how the artist chose to portray whatever concept they intended.  Whether the media is paint, charcoal, or photography and whether the image is abstracted or not, the ultimate product is the "representation" of the mood, feeling, or idea the creator wanted to depict.  "Presentation," on the other hand, denotes how and where the piece is displayed.  Mounted or framed on a wall, encased in a glass box, sitting on an easel, or placed on a massive billboard overlooking the landscape are all basic examples of how a work of art may be "presented" to the public.  How something is presented, however, can change how it is represented.  A particular backdrop or lighting scheme may enhance the feeling or mood the author intends to portray.  Thus, these terms share an inevitable connection.