Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
luso-
←
Latin
Lūsitānia
(mention)
←
Latin
lūsum
(mention)
←
Portuguese
Lusitânia
(mention)
←
Portuguese
luso
(mention)
←
Portuguese
Luso
(mention)
→
Portuguese
lusofonia
(affix)