Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
ceardchumann
←
Irish
ceird
(affix)
←
Irish
cumann
(affix)
←
Manx
keird-chummyn
(cognate)
→
Irish
ceardchumannach
(affix)
→
Irish
ceardchumannaí
(suffix)
→
Manx
keird-chummyn
(cognate)