Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
lage
←
Proto-Celtic
*laggos
(derived)
←
Irish
lag
(derived)
←
Proto-Indo-European
*(s)leh₁g-
(derived)
←
Old Irish
lac
(derived)