Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
idirfhigh
←
Irish
idir-
(affix)
←
Irish
figh
(affix)
←
Scottish Gaelic
eadar-fhigh
(cognate)
→
Scottish Gaelic
eadar-fhigh
(cognate)