He has a susceptibility to depression, and tends to get down over little things.

He has cyclothymia, and his mood changes drastically.

This wall is made of chalky material.

What is the main dish for tonight?

Master, what do you desire?

My father is the head of our household.

The master of ceremonies is my dear friend.

The master of ceremonies is my important friend.

Let's act according to the will of the Creator.

What is the primary key of this database?