What do the words font and police have in common?
Well, a font or typeface as used in computers and other electronic devices is called a police [pɔ.lis] or police de caractères in French.
As well as meaning font, police also means policy, branch or department. It comes from the Italian word polizza (policy, bill, voucher), from the Medieval Latin apodissa (receipt for money), from the Byzantine Greek *ἀπόδειξα (*apódeixa), from Ancient Greek ἀπόδειξις (apódeixis – proof, publication, demonstration). The English word policy comes from the same root [source].
The word police, as in the forces of law enforcement, comes from the Middle French police (governance; management), from Latin polītīa (state, government), from Ancient Greek πολιτεία (politeía – citizenship, government, adminstration), from πολῑ́της (polī́tēs – citizen) [source].
Another French word for font, and also melting, smelting, thawing and
cast iron, is fonte [fɔ̃t]. This probably comes from fondre (to melt (down), smelt, dwindle), from the Old French fondre, from the Latin fundere (to melt), from fundō (I melt), from the Proto-Italic *hundō (pour out), from the Proto-Indo-European *ǵʰewd- (to pour) [source].
The word font, as in “a receptacle in a church for holy water, especially one used in baptism”, comes from the Latin fōns/fontis (fountain), possibly from the Proto-Indo-European *dʰenh₂- (to flow) [source]. The name of the River Danube comes from the same root, via the Latin Dānubius, from the Proto-Celtic *Dānowyos, from *Dānu, from the Proto-Indo-European *déh₂nu (river goddess) [source].
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