Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Luxembourgish
kaschten
←
German
kosten
(cognate)
←
Old French
coster
(derived)
←
Middle High German
kosten
(inherited)
←
Latin
cōnstāre
(derived)
→
Luxembourgish
Kascht
(mention)