Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Gothic
π°πΊ
β
Proto-Germanic
*ak
(inherited)
β
Gothic
π°πΊπ΄πΉ
(compound)
β
Old Saxon
ak
(cognate)