Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Scottish Gaelic
gruaidh
←
Proto-Celtic
*groudos-
(inherited)
←
Welsh
grudd
(cognate)
←
Irish
grua
(mention)
←
Old Irish
gruad
(inherited)
→
Welsh
grudd
(cognate)
→
Irish
grua
(cognate)