Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle Irish
géd
→
Breton
gwaz
(cognate)
→
Welsh
gŵydd
(cognate)
→
Irish
gé
(inherited)
→
Scottish Gaelic
gèadh
(inherited)