Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
gér
←
Proto-Indo-European
*h₂ḱrós
(derived)
←
Latin
acer
(cognate)
→
Irish
géar
(inherited)
→
Scottish Gaelic
geur
(inherited)
→
Manx
gear
(derived)
→
Manx
geayr
(inherited)
→
Manx
geyre
(inherited)