Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
sêr
←
Proto-Brythonic
*ster
(inherited)
←
Proto-Celtic
*sterā
(inherited)
←
Proto-Indo-European
*h₂stḗr
(inherited)
→
Welsh
seren
(affix)
→
Welsh
archser
(prefix)
→
Welsh
Sêr Llong
(compound)
→
Welsh
sêr-lysieueg
(compound)