Nonaccomplishment and Nonperformance

Nonaccomplishment noun - An act that does not achieve its intended goal.

Nonperformance and nonaccomplishment are semantically related. In some cases you can replace term "Nonperformance" with "Nonaccomplishment", this nouns are similar.

Nonperformance noun - Failure to act with the prudence that a reasonable person would exercise under the same circumstances.

Nonaccomplishment and nonperformance are semantically related. You can use "Nonaccomplishment" instead a noun "Nonperformance".