Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Indo-European
*tl̥-mon-
→
Scottish Gaelic
talamh
(derived)
→
Manx
thalloo
(inherited)
→
Old Irish
talam
(inherited)