He was forced to quit sports for medical reasons.

He is an excellent medical student.

She is studying traditional Chinese medicine and is utilizing that knowledge.

He has expert knowledge.

He is studying computer science at a specialized school.

He is a specialist fool, with no interest in anything outside his field.

He couldn't say anything about issues outside of his field of expertise.

There are many different specialty stores in this town.

My house is near the mountains.

This is my grandparents' house.