The medical term is Palate. It can be the Hard palate the bony part in front, or the fleshy part called the Soft palate, which lies behind the hard palate.

hard palate

Hard palate.

The palate that forms the roof of the mouth is divided into two categories namely the anterior bony hard palate, and the posterior fleshy soft palate. The palate is the one that separates nasal and oral cavities.

The palate is defined as the combination of the hard and soft palate. The hard palate, the anterior bony portion, separates the oral cavity from the nasal cavity.