Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Celtic
*dexswos
→
Irish
deas
(inherited)
→
Irish
theas
(inherited)
→
Scottish Gaelic
deas
(inherited)
→
Manx
jiass
(inherited)
→
Old Irish
dess
(inherited)