Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle Welsh
bot
→
Welsh
bod
(inherited)
→
Welsh
amod
(mention)
→
Irish
both
(cognate)
→
Middle Welsh
yn
(mention)
→
Middle Welsh
ammot
(compound)