Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
irregible
←
English
-
(cognate)
←
English
ir
(prefix)
←
English
regible
(prefix)
←
Latin
irregibilis
(derived)
←
Latin
ir
(prefix)
←
Latin
regibilis
(prefix)