Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old English
samwist
←
Old English
sam-
(affix)
←
Old English
wist
(affix)
←
Proto-Germanic
*samawistiz
(inherited)
→
Danish
samvær
(cognate)