Crosspiece and Laser

Crosspiece noun - A horizontal beam that extends across something.

Laser and crosspiece are semantically related. In some cases you can use "Laser" instead a noun "Crosspiece".

Laser noun - An acronym for light amplification by stimulated emission of radiation; an optical device that produces an intense monochromatic beam of coherent light.

Crosspiece and laser are semantically related. Sometimes you can use "Crosspiece" instead a noun "Laser".