Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Luxembourgish
Fändel
←
German
Fahne
(cognate)
←
Proto-Germanic
*fanô
(inherited)
←
Old High German
fano
(inherited)
←
Luxembourgish
(mention)