In geology, the study of tectonics is important for understanding earthquakes and volcanic activity.

He expressed a direct opinion.

He played the antagonist in the movie.

I think that price is reasonable.

That job suits his suitability.

He is a zealous music fan.

Our picnic was cancelled due to the sudden rain.

Please be careful of his deceptive actions.

He is devising a strategy against the enemy nation.

His original idea saved the company.