A derivative noun derives from a verb form. You can take certain suffixes (‑tion, ‑sion, ‑ence, ‑ance, and others), add them to verbs, and produce derivative nouns. Examples include conclusion, statement, pertinence, and scores of others.
Be careful about using derivative nouns. If you mean to convey the meaning of the base verb, then use the verb. Thus, instead of saying I am hopeful of an early resolution of this issue, use the verb forms hiding in the derivative adjective hopeful and the derivative noun resolution, and say this instead: I hope to resolve the issue soon.