Embolus and Roadblock

Embolus noun - An abnormal particle (e.g. an air bubble or part of a clot) circulating in the blood.

Roadblock and embolus are semantically related. in barrier topic. In some cases you can use "Roadblock" instead a noun "Embolus".

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

Embolus and roadblock are semantically related. Sometimes you can use "Embolus" instead a noun "Roadblock".