Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
lugu
←
Welsh
llai
(cognate)
←
Proto-Indo-European
*h₁lengʷʰ-
(inherited)
←
Old Irish
laigiu
(mention)
→
Manx
loo
(inherited)