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A flotilla is a group of boats or small ships travelling or organised together. Learn how naval, sailing, rescue, and civilian flotillas differ from fleets.

A catechist teaches and helps others understand the Christian faith, especially within the Catholic Church. Learn the role, training, duties, and history.

A distributor cap routes high-voltage electricity to each spark plug in the correct firing order. Learn how it works, why it fails and when to replace it.

A funny car is a purpose-built drag racing machine with a hinged body, huge rear tyres and immense power. Learn how it works and why it has that name.

A diplexer combines or separates two frequency bands so they can share one cable. Learn how it differs from a splitter and where it is used.

A scout scope is a low-power rifle optic mounted forward of the action. Learn its purpose, benefits, limits and how it differs from a normal scope.

A backplane is a circuit-board assembly that connects several modules through shared power and data paths. Learn how passive and active backplanes work.

A WebQuest is a structured learning activity in which students use selected online sources to solve a task. Learn its parts, benefits and limits.

A scrim is a light woven material used in theatre, film, construction and manufacturing. Learn how stage scrims reveal scenes and how other scrims add strength.

A skybox is a private premium seating suite in a stadium or arena. Learn what it includes, how it differs from a club seat and what it can cost.