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