Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Latin ludus
Proto-Indo-European *leyd- (derived)
Proto-Italic *loidos (inherited)
Latin lūdō (mention)

English ludography (mention)
English ludology (derived)
English postlude (mention)
English ludus (borrowed)
English ludification (mention)
English hastilude (mention)
English ludo- (derived)
Ancient Greek λοῖσθος (cognate)
Italian ludolinguistica (mention)
Latin ludibrium (mention)
Polish ludyczny (derived)