Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
þjóna
←
Danish
tjene
(cognate)
←
German
dienen
(cognate)
←
Old Norse
þjóna
(inherited)
→
Luxembourgish
déngen
(cognate)