Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Saterland Frisian
Raier
←
German
Reiher
(borrowed)
←
Luxembourgish
Räer
(cognate)
←
Saterland Frisian
Reger
(doublet)
→
Saterland Frisian
Reger
(doublet)