Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
opna
←
Proto-Germanic
*upanǭ
(derived)
←
Proto-Germanic
*upanōną
(derived)
←
Old Norse
opna
(derived)
←
Old Norse
opna
(derived)
→
English
open
(cognate)
→
Icelandic
opnun
(affix)
→
Albanian
hap
(cognate)