The question must be looked at in three parts - definitions, artistic merit and market. All of the media discussed here are prints. A print is made by putting ink on a surface and transferring the ink to a piece of paper. This includes etching, stone litho, serigraph, photomechanical, wood block, potato print and other techniques.
Some prints are reproductions.
This occurs when there is an original work of art which is copied, either in the same or in a different size. Reproductions are usually done with the photomechanical process but not neccessarily. Years ago, reproductions of the Group of Seven work were done by serigraph. Photomechanical reproductions were very low quality in those days. Audubon had his original watercolours reproduced by copper engraving, and these were seen as copies done by different craftspeople.