Roadblock and Spot check

Roadblock noun - Any condition that makes it difficult to make progress or to achieve an objective.

Spot check and roadblock are semantically related. In some cases you can replace phrase "Spot check" with "Roadblock", this terms are similar.

Spot check noun - A check on work performance or product quality made at random times without warning.

Roadblock and spot check are semantically related. Sometimes you can use "Roadblock" instead a noun phrase "Spot check".