My dog likes to nibble gently.

He nervously gave my hand a gentle bite.

His defense is vulnerable.

Nardostachys is a plant with a distinctive fragrance.

Weak interaction is one of the four fundamental forces between elementary particles.

He knows my secret, so he has something on me.

A healthy diet and moderate exercise help boost immunity.

He is an expert in mechanics.

The Earth maintains its shape due to centrifugal force.

He has a strong ability to get things done to make the project successful.