Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Dutch
jaartiental
←
German
Jahrzehnt
(cognate)
←
Dutch
jaar
(compound)
←
Dutch
tiental
(compound)
→
German
Jahrzehnt
(cognate)