Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
allas
←
Proto-Celtic
*alnostus
(inherited)
←
Ancient Greek
ἀλέᾱ
(cognate)
←
Proto-Indo-European
*h₂elh₁-
(root)
←
Proto-Indo-European
*h₂elh₁-
(derived)
→
Irish
allas
(inherited)
→
Scottish Gaelic
allas
(inherited)