Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
át
→
English
oat
(cognate)
→
Westrobothnian
åt
(cognate)
→
Icelandic
átröskun
(affix)