Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Latin
decās
→
Catalan
dècada
(derived)
→
Cebuano
dekada
(derived)
→
Spanish
década
(derived)
→
French
décade
(mention)
→
Italian
deca
(derived)
→
Portuguese
década
(derived)