Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
eista
←
Faroese
eista
(cognate)
←
Norwegian Nynorsk
eiste
(cognate)
←
Old Norse
eista
(derived)
→
Icelandic
eistalyppa
(affix)