Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
French
proto
→
French
proto-germanique
(prefix)
→
French
protoporphyrine
(prefix)
→
French
protohistoire
(prefix)
→
French
protoplanétaire
(prefix)
→
French
protoplanète
(prefix)
→
French
protoétoile
(prefix)
→
French
protohistorique
(prefix)
→
French
protocelte
(prefix)
→
French
protolangue
(prefix)
→
French
protoiodure
(prefix)
→
French
protobromure
(prefix)
→
French
protocarbure
(prefix)
→
French
protochlorure
(prefix)
→
French
protocyanure
(prefix)
→
French
protofluorure
(prefix)
→
French
protophosphure
(prefix)
→
French
protosulfure
(prefix)
→
French
protoséléniure
(prefix)
→
French
protosel
(prefix)
→
French
protocérébron
(prefix)
→
French
protomorphose
(prefix)
→
French
prototrophe
(confix)
→
French
prototrophie
(confix)