Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Luxembourgish
Gras
←
Proto-Germanic
*grasą
(inherited)
←
Proto-West Germanic
*gras
(inherited)
←
Old High German
gras
(inherited)
→
Luxembourgish
Graskaarp
(compound)