Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
fedjag
←
Irish
eiteog
(cognate)
←
Scottish Gaelic
iteag
(cognate)
←
Old Irish
eteóc
(inherited)
←
Old Irish
ette
(mention)
←
Old Irish
-óc
(mention)
→
Manx
neufedjagagh
(affix)