Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Danish
ært
←
Old Norse
ertr
(derived)
←
Old Saxon
eriwit
(derived)
←
Old Saxon
erit
(mention)
→
Icelandic
erta
(cognate)
→
Luxembourgish
Ierbes
(cognate)
→
Swedish
ärt
(cognate)