Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
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Old English hwæt
Irish cad (cognate)
Proto-Germanic *hwat (inherited)
Old High German waz (cognate)
Proto-Indo-European *kʷod (inherited)
Latin quod (cognate)
Lithuanian kàd (cognate)
Old Norse hvat (cognate)
Old Dutch wat (cognate)
Old Frisian hwet (cognate)
Old Saxon hwat (cognate)

English what (inherited)
English how (mention)
Old English bledhwæt (affix)
Old English hwæthwugu (suffix)
Middle English what (inherited)
Middle English whan (mention)
Latin quod (mention)
Old Norse hvat (cognate)
Old Saxon hwat (cognate)
Scots what (inherited)
Yola faade (inherited)