Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Catalan
tresor
←
Catalan
tesaurus
(doublet)
←
Ancient Greek
θησαυρός
(derived)
←
Latin
thesaurus
(derived)
→
Catalan
tresorer
(affix)
→
Catalan
cercatresors
(compound)