Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
cíall
←
Proto-Celtic
*kʷēslā
(inherited)
←
Welsh
pwyll
(cognate)
→
Irish
ciall
(inherited)
→
Scottish Gaelic
ciall
(inherited)
→
Scottish Gaelic
cèillidh
(mention)
→
Manx
keeall
(inherited)