Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Plautdietsch
Been
←
Proto-Germanic
*bainą
(inherited)
←
Proto-West Germanic
*bain
(inherited)
←
Old Saxon
bēn
(inherited)