Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Luxembourgish
dacks
←
Middle High German
dicke
(derived)
←
Old High German
thicco
(derived)
←
Luxembourgish
déck
(mention)
←
Dutch
dikwijls
(cognate)