Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
segar
←
Proto-Indo-European
*sek-
(derived)
←
Latin
secō
(inherited)
←
Old Portuguese
segar
(inherited)
→
Swedish
såga
(cognate)