Account Id and Contact Id Diffrent in CRM and Support . What is the Diff between a case generated in crm and ticket genrated in support

Account Id and Contact Id Diffrent in CRM and Support . What is the Diff between a case generated in crm and ticket genrated in support

My zoho CRM and support are integrated but when Accounts are extracted through api Same accounts have diffrent ID's .
What is the diff b/w ticket in support and case in CRM