Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Norse
mjǫk
←
Proto-Germanic
*mekō
(inherited)
←
Proto-Indo-European
*meǵh₂-
(derived)
→
Icelandic
mjög
(inherited)