Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Norse
tryggva
←
Proto-Germanic
*triwwijaną
(derived)
→
Icelandic
trygging
(mention)
→
Icelandic
tryggja
(derived)
→
Norwegian Nynorsk
tryggje
(mention)