Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Luxembourgish
Naachen
←
German
Nachen
(cognate)
←
Proto-Germanic
*nakwô
(inherited)
←
Old High German
nahho
(inherited)
←
Dutch
aak
(cognate)