Analogue electronics (or analog in American English) are electronic systems with a continuously variable signal, in contrast to digital electronics where signals usually take only two different levels.
While there is nothing comparable to American and British English spelling differences, grammar and to a lesser extent pronunciation can vary sometimes.
A color gel or color filter (British spelling: colour gel or colour filter), also known as lighting gel or simply gel, is a transparent colored material that is used in theatre, event production, photography, videography and cinematography to color light and for color correction.
A sceptre (or scepter in U.S. English) is a symbolic ornamental staff or wand held in the hand by a ruling monarch as an item of royal or imperial insignia.
A tranquilizer (US), tranquillizer (Oxford spelling), or tranquilliser (UK; see spelling differences), is a drug that induces tranquility in an individual.
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A cephalohaematoma (British English) or cephalohematoma (American English) is a hemorrhage of blood between the skull and the periosteum of a newborn baby secondary to rupture of blood vessels crossing the periosteum.