Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
cóir
←
Proto-Celtic
*kom
(mention)
←
Welsh
cywair
(cognate)
←
Proto-Indo-European
*wer-
(root)
←
Proto-Indo-European
*wer-
(derived)
→
Welsh
cywir
(cognate)
→
Manx
cair
(mention)
→
Old Irish
écóir
(affix)