Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
herðatré
←
Icelandic
herðar
(affix)
←
Icelandic
tré
(affix)
→
Westrobothnian
heḻtré
(cognate)