Fixture and Gas fixture

Fixture noun - A person who has long been associated with a place or activity.

Gas fixture and fixture are semantically related in electric appliance topic. In some cases you can use "Gas fixture" instead a noun "Fixture", when it comes to topics like attached equipment.

Gas fixture noun - A device to convey illuminating gas from the pipe to the gas burner.

Fixture and gas fixture are semantically related in electric appliance topic. You can use "Fixture" instead a noun phrase "Gas fixture", if it concerns topics such as attached equipment.