"Pulse" and "rhythm": beating in unison or marching to different drums?

What is similar?

Both "pulse" and "rhythm" relate to a regular pattern or beat. They are often used in contexts involving cycles or repetitive actions, such as music, biology, and the flow of events.

What is different?

"Pulse" generally refers to a single beat or throb, such as the beat of the heart or a short burst of energy, and is often associated with something that can be felt physically or measured. "Rhythm" refers to a repeated pattern of sound or movement and is often associated with the overall structure or flow of music, speech, or events.

Which one is more common?