Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Germanic
*ternō
→
English
tarn
(derived)
→
Faroese
tjørn
(inherited)
→
Icelandic
tjörn
(inherited)
→
Norwegian Bokmål
tjern
(inherited)
→
Norwegian Bokmål
kjønn
(inherited)
→
Old Norse
tjǫrn
(inherited)