Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Cornish
hanow
←
Breton
anv
(cognate)
←
Proto-Brythonic
*anw
(inherited)
←
Proto-Celtic
*anman
(inherited)
←
Welsh
enw
(cognate)
←
Proto-Indo-European
*h₁nómn̥
(inherited)
→
Welsh
enw
(cognate)