Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
brennisteinn
→
English
brimstone
(cognate)
→
Icelandic
brennisteinssýra
(affix)
→
Dutch
barnsteen
(cognate)