Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Luxembourgish
soss
←
German
sonst
(cognate)
←
Middle High German
sunst
(inherited)
←
Old High German
sus
(derived)
→
Central Franconian
söss
(cognate)