He is an expert in oceanography.

He learned about the structure of society in his civics class.

He is an expert in enzymology and conducts many researches.

He is an expert in gemology, and he is good at evaluating the quality of diamonds.

Topography is a field of study that researches terrain and geographical features.

My specialty is urology, and I am particularly interested in kidney research.

He is known as an expert in library science.

Serology plays a very important role in the diagnosis of infectious diseases.

Phenomenology is a branch of philosophy that focuses on the study of human experience and consciousness.

He has a deep interest in toponymy.