Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Luxembourgish
Fliger
←
German
Flieger
(derived)
←
German
fliegen
(mention)
←
Luxembourgish
fléien
(mention)