Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Scottish Gaelic
eagal
←
Old Irish
ecal
(inherited)
→
Scottish Gaelic
eagalach
(affix)
→
Manx
aggle
(cognate)