Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Celtic
*dworestus
→
Welsh
drws
(inherited)
→
Irish
doras
(inherited)
→
Scottish Gaelic
doras
(inherited)
→
Manx
dorrys
(inherited)
→
Middle Irish
dorus
(inherited)
→
Old Irish
dorus
(inherited)