Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
pythefnos
←
Proto-Brythonic
*pɨmθeβ̃noɨθ
(inherited)
←
Proto-Celtic
*[[kʷinkʷe]]-[[dekam|de(k)m]] [[noxs|noxtes]]
(derived)
←
Welsh
nos
(mention)
←
Middle Welsh
petheunos
(inherited)
→
Irish
coicís
(cognate)