Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
follasach
←
Irish
follas
(affix)
←
Irish
-ach
(affix)
←
Scottish Gaelic
follaiseach
(cognate)
←
Old Irish
foillsech
(inherited)
→
Scottish Gaelic
follaiseach
(cognate)