Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Danish
ildhu
←
Danish
ild
(compound)
←
Danish
hu
(compound)
←
Faroese
eldhugi
(cognate)
←
Icelandic
-
(cognate)
←
Swedish
eldhåg
(cognate)