Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
þíða
←
Proto-Germanic
*þīdaną
(derived)
←
Icelandic
þíður
(mention)
←
Icelandic
þiðinn
(mention)
←
Icelandic
þíður
(mention)
←
Old Norse
þíða
(derived)
→
Icelandic
þíður
(mention)