Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
keisari
←
Middle Low German
keiser
(derived)
←
Latin
Caesar
(mention)
←
Old Norse
keisari
(derived)
→
Icelandic
keisaraviður
(mention)
→
Icelandic
keisaraskurður
(mention)
→
Luxembourgish
Keeser
(cognate)