Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Scottish Gaelic
cearc
←
Proto-Celtic
*kerkā
(inherited)
←
Old Irish
cerc
(inherited)
→
Scottish Gaelic
taigh-chearc
(compound)
→
Scottish Gaelic
cearc Innseanach
(mention)