Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
gonaid
←
Proto-Celtic
*gʷaneti
(inherited)
→
Old English
guþ
(cognate)
→
Irish
goin
(inherited)
→
Scottish Gaelic
gaoid
(mention)