Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Luxembourgish
Géigner
←
German
Gegner
(derived)
←
Middle Low German
gēgenêre
(derived)
←
Middle Low German
gēgenen
(mention)
←
Luxembourgish
géint
(mention)