Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old English
twi
→
Old English
twifere
(prefix)
→
Old English
twirædness
(prefix)
→
Old English
twihycgan
(prefix)
→
Old English
twidælan
(prefix)