If you use a word with a suffix, stop for moment and ask if version without the suffix has the meaning you want. But you ask: if the suffix doesn't change word, why does suffix version exist? All too often, the writer or speaker is being pretentious. If you think pretentious is o.k., consider its synonyms: showy, flamboyant, ostentatious, splashy (see more below). Is that your intention (or were you after "intent" -- strongly implies deliberateness -- or "intentionality"?) (N.B. "Intentionality" while meaning "state of having an intention," it also has a technical meaning in philosphy.)
Here are some examples to avoid, followed by shorter word that just the job you need done (not accomplished).
But some times the suffix does change the meaning. Here the examples with suffix version and change meaning.
Nominalization (someday a page on that) turns perfectly verbs into nouns. Once a noun has been is common place, it can turn into a verb. The last step is increasingly common: the noun for a large number google when used for a successful search earth became in time the verb to do a search (with or without naming engine): to google. Any teenager can easily thing of other examples. Some survive and others fortunately die. But but once the noun or the verb exists ...standback!