Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Finnish
kaltio
←
Norwegian
kjelde
(cognate)
←
Old Norse
kelda
(cognate)
←
Southern Sami
gaaltije
(cognate)
←
Swedish
källa
(cognate)
→
Russian
колодезь
(cognate)