Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Catalan
espurna
←
Proto-Indo-European
*pur-
(mention)
←
Latin
prūna
(derived)
←
Old Catalan
purna
(mention)
→
Catalan
espurnejar
(affix)
→
Aromanian
sprunã
(cognate)