Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Luxembourgish
spären
←
German
sperren
(cognate)
←
Old High German
sperran
(inherited)
←
Icelandic
sperra
(cognate)
←
Dutch
sperren
(cognate)
←
Swedish
spärra
(cognate)