Alert and Spark plug

Alert adjective - Paying close attention usually for the purpose of anticipating approaching danger or opportunity.

Spark plug and alert are semantically related. In some cases you can use "Spark plug" instead an adjective "Alert".

Nearby Words: alertness, alerted, alerting, alerter

Spark plug noun - Electrical device that fits into the cylinder head of an internal-combustion engine and ignites the gas by means of an electric spark.

Alert and spark plug are semantically related. Sometimes you can use "Alert" instead an adjective phrase "Spark plug".