Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old English
gaderian
←
Proto-West Germanic
*gadurōn
(inherited)
→
English
gather
(inherited)
→
Old English
gegaderian
(prefix)
→
Old English
gaderung
(affix)
→
Old English
gæd
(mention)