Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
galchro
←
Irish
gallchnó
(cognate)
←
Old Irish
gall
(derived)
←
Old Irish
cnó
(mention)
→
Manx
billey galchro
(affix)
→
Manx
daah galchro
(affix)