Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
ascaill
←
Welsh
asgell
(cognate)
←
Latin
axilla
(derived)
←
Middle Irish
ascall
(inherited)
←
Old Irish
oxal
(cognate)