Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Luxembourgish
Äerdbier
←
Proto-Germanic
*erþōbazją
(inherited)
←
Old High German
erdberi
(inherited)
←
Luxembourgish
Äerd
(affix)
←
Luxembourgish
Bier
(affix)