Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-West Germanic
*mātu
→
German
Maß
(inherited)
→
Hunsrik
Mos
(derived)
→
Luxembourgish
Mooss
(derived)