Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
sechmoella
←
Proto-Celtic
*layeti
(mention)
←
Proto-Celtic
*ɸalnati
(mention)
←
Old Irish
sech
(mention)
←
Old Irish
·ella
(mention)