Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
giall
←
Proto-Celtic
*gēstlos
(inherited)
←
Welsh
gwystl
(cognate)
←
Old Irish
gíall
(inherited)
←
Old Irish
gíall
(inherited)
→
Irish
géill
(mention)