Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Scottish Gaelic
caith
←
Old Irish
caithid
(inherited)
→
Scottish Gaelic
tràth caithte
(compound)
→
Scottish Gaelic
caitheadair
(suffix)
→
Manx
ceau
(cognate)