Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
West Frisian
blau
←
Proto-West Germanic
*blāu
(inherited)
←
Old Frisian
blāu
(inherited)
→
West Frisian
blauboarstke
(compound)
→
Alemannic German
blaaw
(cognate)
→
Saterland Frisian
blau
(cognate)