Well, derivational morphology isn't very regular. Deriving a noun from the -ing form of a verb is rather productive, but there are lots of other ways to form deverbal nouns, and some verbs are derived from homphonous nouns to begin with. So you have all sorts of competing noun forms related to verbs, and the relationships between them aren't going to be regular or predictable.
In some cases using the noun derived from the -ing form will be less natural when another related noun exists, but both will be possible. In other cases, both will be fine but have different meanings. And so on. Case by case.
@Færd all? The present participle is also the gerund form
Are you looking for ... There's the idea of a 'root' form and its derived forms via suffixes prefixes, sound changes whatever. And the derived forms can have all sorts of POS.
Pure adj, purely adv, purify verb, purification noun.