Would there be an instance where you would assign one but not the other?

From: Program for Cooperative Cataloging <[log in to unmask]> On Behalf Of Violeta Ilik
Sent: Thursday, August 9, 2018 9:07 AM
To: [log in to unmask]
Subject: Re: [PCCLIST] Fiction genres vs. --Fiction


Not sure why would you want to flip 650 Subject Added Entry--Topical Term to 655  Index Term--Genre/Form. They are different.

More info here:
and here:

On Thu, Aug 9, 2018 at 9:56 AM, John Lavalie <[log in to unmask]<mailto:[log in to unmask]>> wrote:
What's the difference between

650 Werewolves--Fiction.
655 Werewolf fiction.   ?

I think there is no difference and I'm considering flipping (locally) those 650s to 655s.  Is there a difference I'm missing?

John Lavalie | Cataloging and Metadata Specialist | Des Plaines Public Library |