Something must be said about the semantics of Nanon, as words separated by one letter become different parts of speech, and mean different things. Nouns and their verb components should not always be taken as near synonyms, even though this may sometimes be the case. For example, a word that means a driver of an automobile does not automatically mean ‘to drive an automobile’ in it’s verb form. It might be best to learn the noun and verb form separately and not think of the -i as an affix, then realize later that there is a connection between the two words.
Also, care must be taken to enunciate certain words carefully, as they may differ by just a vowel. The biggest problem, perhaps, would be the gender prefixes ach- and ech-