Hello Robert,
Here's my answer. Originally in the default Case table, these are the fields which are associated with Entity and Contacts.
Entity:
BillAddressAddr1, BillAddressAddr2, BillAddressAddr3,BillAddressCity,BillAddressCountry,BillAddressPostalCode,BillAddressState, EntityCompanyName.
Contatcs:
ConatctsBalance, ConatctsCampaign, ConatctsEmail, ConatctsFaceBookUserName, ConatctsLinkedInPublicUserName, ContactsMobile, Conatctsname, ConatctsPhone, ConatctsSalesRep, ConatctsTitle, ConatctsTwitterUserName, ConatctsWebsite.
I hope that helps!
-Inder