Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
English extension
Middle English extensioun (inherited)
Old French estension (derived)
Latin extensiō (derived)

English hyperextension (prefix)
English extensional (suffix)
English extensionless (suffix)
English overextension (prefix)
English leg extension (mention)
English inextension (prefix)
English extensionist (suffix)
English coextension (prefix)
English underextension (prefix)
English counterextension (prefix)
English postextension (prefix)
English flexoextension (prefix)
English superextension (prefix)
English Extension Scouting (link)
English medex (mention)
English flextension (blend)
Irish síneadh (link)
Ido extensar (borrowed)
Brunei Malay extension (borrowed)