different between reproduced vs reproducer

English

reproduced

reproduce +? -er

reproducer (plural reproducers)

One who reproduces something.
- 2000, David Greer, Ian Rumbold, Jonathan King, Musicology and Sister Disciplines (page 304)
  Local musicians were not just passive reproducers of the tradition.
In a phonograph, a device containing a sounding diaphragm and the needle or stylus that traverses the moving record, for reproducing the sound.
In a manograph, a device for reproducing the engine stroke on a reduced scale.
(software engineering) A series of steps which reproduce a bug or other condition of interest.

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