Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
gjarn
←
Proto-Germanic
*gernaz
(inherited)
←
Old Norse
gjarn
(inherited)
→
English
yern
(cognate)
→
Alemannic German
Giir
(cognate)
→
Icelandic
gjarnan
(mention)
→
Icelandic
gjarna
(mention)