Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-West Germanic
*blāan
→
English
blow
(inherited)
→
German
blähen
(inherited)
→
North Frisian
blä
(derived)
→
Scots
blaw
(inherited)