Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
er
←
Welsh
er mwyn
(link)
←
Welsh
er gwaethaf
(link)
←
Welsh
ers
(link)
→
Welsh
erioed
(compound)