Light and Running light

Light noun - The steady giving off of the form of radiation that makes vision possible.

Running light and light are semantically related. In some cases you can replace phrase "Running light" with "Light", this terms are similar.

Nearby Words: lighten, lightweight, lightly, lightness, lighted

Running light noun - Light carried by a boat that indicates the boat's direction; vessels at night carry a red light on the port bow and a green light on the starboard bow.

Light and running light are semantically related. You can use "Light" instead a noun phrase "Running light".