We use Title for Salutation, used after "Dear" in a letter, and Title 2 for Addressee, as on an envelope. We use Suffix for Jr., Sr., III, etc. and Suffix 2 for professional credentials, such as MD or PhD. Having all the values for both types of fields in the same code table is confusing and results in easy violation of our data standards. I would imagine the fields are designed for different purposes, so it makes sense to separate the values that are specific to the purpose of the field.