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

Strong interaction is one of the four fundamental forces in particle physics.

Electromagnetic interaction is one of the fundamental forces used to explain the force between substances.

Gravitational interaction creates attraction between objects.

Fundamental interaction is one of the most important forces in physics.

Cerebrospinal fluid plays an important role in protecting the brain and spinal cord.

When my stomach hurts, I always take an antacid.

My stomach hurt, so I took a laxative.

I am taking antihistamines for my allergies.

He was prescribed antidepressants by his doctor.