He is interested in diachronic linguistics studies.

He is interested in synchronic linguistics.

He is thought to be a very unsociable person.

Shu never missed a day of training, striving to maintain his self-discipline.

He used a tie to bind two things together.

His suspicious looking behavior made me uneasy.

He felt cognitive dissonance between his actions and beliefs.

Japan's exclusive economic zone plays a crucial role in the management and utilization of marine resources.

He believes that he has extrasensory perception.

In behavioral sciences, the use of metatools plays a crucial role.