Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
tonto
←
Spanish
tonto
(cognate)
←
Italian
tonto
(cognate)
←
Romanian
tont
(cognate)
←
Romanian
tânt
(link)
→
Spanish
tonto
(cognate)
→
Italian
tonto
(cognate)
→
Portuguese
besta
(link)
→
Portuguese
tontura
(affix)
→
Portuguese
estontear
(confix)
→
Portuguese
tontice
(affix)