Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
seal
←
Proto-Celtic
*swelo-
(inherited)
←
Proto-Indo-European
*welH-
(derived)
←
Old Irish
sel
(inherited)
→
Irish
sula
(mention)