Verbs, on the other hand, can stand on their own. Notice all of the prepositional phrases that these nouns require. This sentence is much easier to read. The faculty discussed who might earn tenure. The result, again, is a sentence that is more direct and easier to read.
Abstract nouns are, well, abstract.
Using too many abstract nouns will leave your prose seeming un-rooted. Instead, use concrete nouns as well as strong verbs to convey your ideas. Abstract nouns can obscure your logic. Note how hard it is to follow the line of reasoning in the following sentence. Decisions with regard to the dismissal of tutors on the basis of their inability to detect grammar errors in the papers of students rest with the Director of Composition.