If you're using a field for multiple purposes on different forms , then good practice is to always prepend (using JS of course, as the form context can't be known on the server) the "working title" of the value. For example, instead of storing "paleo" and trying to figure out what that meant, store the name as well:
dietary preference: paleo
art history period: paleo
But it isn't entirely clear what you mean by "a lot of different data," so please flesh out the entire use case.
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