Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Luxembourgish
Räif
←
German
Reif
(cognate)
←
Old High German
rīfo
(derived)
→
Luxembourgish
räifen
(affix)