Are marketable title and insurable title the same thing?

Marketable title and insurable title are related but not identical. Marketable title is a title that is free from reasonable doubt and would be accepted by a prudent buyer. Insurable title is a title that a title insurance company is willing to insure against defects. While an insurable title is generally marketable, a marketable title may not always be insurable due to specific risks or exclusions.