Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
enech
→
Welsh
wyneb
(cognate)
→
Old Irish
agad
(link)
→
Old Irish
agad
(link)
→
Old Irish
fíad
(link)