I have my graduation ceremony tomorrow.

I attended the unveiling ceremony of the new park.

We attended his memorial service.

He created a formula to solve the problem.

I learned how to create formulas in math class.

This building is famous for its Ionic order columns.

This building adopts the Doric order of ancient Greek architecture.

This building is famous for its Corinthian columns.

It's difficult to solve this monomial expression.

I attended an awards ceremony yesterday.