Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Norse
þrøngð
←
Proto-Indo-European
*trenkʷ-
(root)
←
Old Norse
þrøngva
(suffix)
←
Old Norse
-ð
(suffix)