Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Frisian
mōna
→
North Frisian
muun
(inherited)
→
North Frisian
moune
(derived)
→
West Frisian
moanne
(inherited)
→
Old Norse
máni
(cognate)
→
Saterland Frisian
Moune
(inherited)