Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old High German
dar
←
Old English
þær
(mention)
←
Proto-Germanic
*þar
(inherited)
←
Proto-West Germanic
*þār
(inherited)
←
Old Norse
þar
(mention)
→
Luxembourgish
duer
(derived)
→
Luxembourgish
duer-
(derived)