Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
agouro
→
Galician
agoiro
(cognate)
→
Portuguese
agoural
(suffix)
→
Portuguese
agourar
(suffix)
→
Portuguese
augúrio
(doublet)