He denied his previous remarks.

A determiner plays a role in specifying a noun.

What is the amplitude of this sine wave?

The sine, which is one of the trigonometric functions, represents the ratio of the radius of a circle to the opposite side of a right triangle.

Collagen is an important component for keeping our skin and bones strong.

He is an expert in nuclear physics.

He said 'friend' as a noun ending for me.

Nuclear fission is a powerful process that generates energy.

He composed a fantasia for the piano.

We took a walk in the primeval forest over the weekend.