Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Karelian
lukku
←
Finnish
lukko
(cognate)
←
Proto-Germanic
*lukǭ
(derived)
←
Ludian
lukk
(cognate)
→
Finnish
lukko
(cognate)