Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
difficulty
←
English
dis-
(affix)
←
English
facile
(affix)
←
English
-ty
(affix)
←
English
difficult
(affix)
←
English
-y
(affix)
←
Middle English
difficultee
(inherited)
←
Old French
difficulté
(derived)
←
Latin
difficultas
(derived)
←
Latin
difficul
(mention)
←
Latin
difficilis
(mention)
←
Latin
dis-
(mention)
←
Latin
facilis
(mention)
→
English
difficult
(mention)
→
Spanish
dificultad
(cognate)
→
Dutch
bezwaar
(link)