Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Scottish Gaelic
rèite
←
Old Irish
réidid
(derived)
→
Scottish Gaelic
rèitich
(affix)
→
Scottish Gaelic
rèiteach
(affix)