Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
cannwyll
←
Proto-Brythonic
*kantuɨll
(inherited)
←
Cornish
kantol
(cognate)
←
Latin
candēla
(derived)
←
Old Welsh
cannuill
(inherited)
←
Middle Welsh
canhwyll
(inherited)
→
Welsh
canhwyllbren
(compound)