Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle Welsh
araf
←
Proto-Celtic
*aramo-
(inherited)
←
Proto-Celtic
*eramo-
(mention)
←
Ancient Greek
ἐρῆμος
(cognate)
←
Proto-Indo-European
*h₁erh₁-mo-
(inherited)
←
Sanskrit
इलयति
(cognate)
→
Welsh
araf
(inherited)
→
Middle Welsh
araued
(suffix)