Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Danish
hæk
←
German
Hecke
(derived)
←
German Low German
Heck
(derived)
→
Old English
hecg
(cognate)
→
Icelandic
hekk
(cognate)
→
Swedish
häck
(cognate)