Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Luxembourgish
Fillen
←
German
Füllen
(cognate)
←
Proto-Germanic
*fulô
(inherited)
←
Old High German
fulīn
(inherited)