Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle Low German
wat
←
Proto-Germanic
*hwat
(inherited)
←
Old Saxon
hwat
(inherited)
→
Danish
hvis
(mention)
→
German
wat
(derived)
→
German
Watt
(borrowed)