Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Luxembourgish dat
Proto-Germanic *þat (inherited)
Old High German that (inherited)
Old High German dat (mention)
Old High German daz (mention)
Limburgish dat (cognate)
Dutch dat (cognate)

Luxembourgish datt (mention)
Luxembourgish tëscht (mention)