Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Indo-European
*mr̥wós
→
Breton
maro
(inherited)
→
Irish
marbh
(inherited)
→
Scottish Gaelic
marbh
(inherited)
→
Old Irish
marb
(inherited)