Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Spanish
flujo
←
Spanish
flojo
(doublet)
←
Latin
fluxus
(borrowed)
→
Spanish
flux
(doublet)
→
Spanish
flojo
(doublet)