Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Portuguese
espera
←
Proto-Indo-European
*speh₁-
(derived)
←
Latin
spero
(derived)
←
Portuguese
esperar
(back-formation)
←
Old Portuguese
esperar
(derived)
→
Portuguese
pera
(clipping)
→
Portuguese
peraí
(mention)