Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Latin
Lugdunum
←
Gaulish
*Lugudūnon
(borrowed)
←
Proto-Celtic
*Lugus
(cognate)
←
Proto-Celtic
*dūnom
(mention)
→
English
lawn
(mention)
→
Dutch
Leiden
(cognate)