Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
raithneach
←
Scottish Gaelic
raineach
(cognate)
←
Manx
rhennagh
(cognate)
←
Old Irish
raithnech
(inherited)
→
Scottish Gaelic
raineach
(cognate)
→
Manx
rhennagh
(cognate)