Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old English
reġnwyrm
→
English
rainworm
(inherited)
→
German
Regenwurm
(cognate)
→
Dutch
regenworm
(cognate)