Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Celtic
*temeslos
→
English
Thames
(derived)
→
Breton
teñval
(inherited)
→
Welsh
tywyll
(inherited)
→
Old Irish
temel
(inherited)