Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Aramaic
מָדַי
→
Coptic
ⲙⲁⲧⲟⲓ
(derived)
→
Coptic
ⲙⲁⲧⲟⲉⲓ
(cognate)