Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Indo-European
*h₂wélh₁tis
→
Breton
glad
(inherited)
→
Welsh
gwlad
(inherited)
→
Old Welsh
gulat
(inherited)