Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Catalan
mono-
←
Ancient Greek
μόνος
(derived)
→
Catalan
monoparental
(affix)
→
Catalan
monosacàrid
(affix)
→
Catalan
monòcit
(affix)