Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
bua
←
Breton
buz
(cognate)
←
Welsh
budd
(cognate)
←
Scottish Gaelic
buaidh
(cognate)
←
Old Irish
búaid
(inherited)
→
Irish
cumas
(link)
→
Irish
buaigh
(suffix)
→
Irish
ollbhua
(prefix)
→
Scottish Gaelic
buaidh
(cognate)