Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old English
eornost
←
Proto-Germanic
*ernustuz
(inherited)
←
Old High German
ernust
(cognate)
→
English
earnest
(mention)
→
Old English
eornostlice
(affix)
→
Old High German
ernust
(cognate)
→
Old Saxon
ernust
(mention)