Bell jar and Lens hood

Bell jar noun - A bell-shaped glass cover used to protect and display delicate objects or to cover scientific apparatus or to contain gases.

Lens hood and bell jar are semantically related in cap topic. In some cases you can use "Lens hood" instead a noun phrase "Bell jar".

Lens hood noun - A tubular attachment used to keep stray light out of the lens of a camera.

Bell jar and lens hood are semantically related in cap topic. You can use "Bell jar" instead a noun phrase "Lens hood".