Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
German
Gagat
←
German
Jett
(doublet)
←
Latin
gagātēs
(borrowed)
→
German
Jett
(doublet)
→
Swedish
gagat
(cognate)