The word 'typing' is a modern English formation built upon the older noun 'type'. The root 'type' traces back to Greek 'typos', which originally meant a blow, the mark of a blow, an impression, or a figure. This evolved into Latin 'typus', signifying a figure, image, or form. In English, 'type' came to denote a symbol or character for printing, leading to the verb 'to type', meaning to write with a typewriter or keyboard, essentially making impressions of characters. The addition of the Germanic suffix '-ing', used to form nouns of action, creates 'typing', which logically denotes the action or result of producing text via impressed characters.

Structure: type (impression, model) + ing (action/result suffix) - type: From Latin 'typus', from Greek 'typos' (blow, impression, model). In this word, it functions as the base root meaning the act or process of making impressions (as with typewriter keys). - ing: From Old English '-ung', '-ing', a suffix forming verbal nouns indicating action or its result. In this word, it nominalizes the verb 'to type'.