Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
leitoso
←
Latin
lactōsus
(inherited)
←
Portuguese
leite
(suffix)
←
Portuguese
oso
(suffix)
←
Old Portuguese
leitoso
(inherited)
→
Romanian
lăptos
(cognate)