Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Scottish Gaelic
eitean
←
Ancient Greek
ἔτνος
(cognate)
←
Proto-Indo-European
*h₁ét(e)no-
(inherited)
←
Middle Irish
eitne
(inherited)
←
Old Armenian
ունդ
(cognate)
→
Irish
eithne
(cognate)
→
Ancient Greek
ἔτνος
(cognate)