Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Swedish
svärm
←
Proto-Germanic
*swarmaz
(inherited)
←
Old Swedish
sværmber
(inherited)
←
Proto-Indo-European
*swer-
(derived)
←
Old Norse
svarmr
(inherited)
→
English
swarm
(cognate)
→
Swedish
svärma
(affix)