Flask and Lightbulb

Flask noun - Bottle that has a narrow neck.

Lightbulb and flask are semantically related in light bulb topic. In some cases you can use "Lightbulb" instead a noun "Flask".

Lightbulb noun - Electric lamp consisting of a transparent or translucent glass housing containing a wire filament (usually tungsten) that emits light when heated by electricity.

Flask and lightbulb are semantically related in light bulb topic. You can use "Flask" instead a noun "Lightbulb".