Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Luxembourgish
Opsaz
←
German
Aufsatz
(cognate)
←
Middle High German
ūfsaz
(inherited)
→
German
Aufsatz
(cognate)