rat beam (turns people into rats) vs rat beam (fires a narrow column of rats at relativistic speed)
don't forget rat beam (turns people into rats by firing a narrow column of rats at relativistic speed at them)
of course there are also:
-rat beam (structural element that resists lateral loads and is comprised primarily of rats)
-rat BEAM (proposed variant of the International Space Station's Bigelow Expandable Activity Module for habitation by rats)
