Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
lheiy
←
Proto-Celtic
*laygos
(inherited)
←
Welsh
llo
(cognate)
←
Scottish Gaelic
laogh
(cognate)
←
Proto-Indo-European
*leh₂p-
(derived)
←
Cornish
leugh
(cognate)
←
Old Irish
lóeg
(inherited)
→
Scottish Gaelic
laogh
(cognate)