Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
corff
←
Breton
korv
(cognate)
←
Proto-Brythonic
*korf
(inherited)
←
Welsh
cryf
(mention)
←
Proto-Indo-European
*krep-
(root)
←
Proto-Indo-European
*krep-
(mention)
←
Latin
corpus
(derived)
←
Middle Welsh
corff
(inherited)
→
Welsh
cryf
(mention)
→
Welsh
corfflunio
(compound)
→
Welsh
bongorff
(compound)
→
Welsh
corfflu
(compound)
→
Welsh
corffor
(doublet)