Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
cuspóir
←
Irish
cuspa
(affix)
←
Irish
-óir
(affix)
←
Scottish Gaelic
cuspair
(cognate)
←
Latin
cuspis
(derived)
←
Middle Irish
cuspóir
(inherited)
→
Scottish Gaelic
cuspair
(cognate)