Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
século
←
Latin
saeculum
(borrowed)
←
Old Portuguese
seglo
(mention)
←
Old Portuguese
segre
(mention)
→
Interlingua
seculo
(cognate)
→
Italian
secolo
(cognate)