Tek,
Looks like you enjoy a good verbal match, me too, but no hard feelings.
The original poster asked the difference between a workstation and a synth.
<< I thought it was clear that all workstations include a proper synthesizer. Unless you're talking about those awful home keyboards and the groovebox crap (not just Roland's). >>
Using your above comment then it would appear to me that the answer to the original question would be: "a workstation is a synth with added features", since all workstations are synths.
<< A synth doesn't nessessarily have anything extra, which can be a very good thing, depending on the studio you already have.<<
Sooo, if you have a studio that already has the extras, a synth would reasonably make a better "workstation" than a workstation would, for if you have a workstation you would have redundant equipment that was not desirable. <> (as in your comment)
< Unless you're talking about those awful home keyboards and the groovebox crap (not just Roland's).>
My synth is a Kurzweil, the other two keyboards are Yamaha, one being a piano. None of these are "crap" but I know what you mean. It is a standing joke between my husband and I that we have had people with $100 Casios say, "I have a keyboard just like yours". That's always a laugh, my Kurzweil as it is cost over $5,000, but when we see one of those little "craps" one of us will invariably say, "look there's a keyboard just like yours\mine".
Nevie, hope you are seeing all this.
Tek, I hope you see this as a friendly verbal battle.