Spark and Spark plug

Spark noun - A very small amount.

Spark plug and spark are semantically related. In some cases you can use "Spark plug" instead a noun "Spark".

Nearby Words: sparkle, sparkling, sparked, sparkled, sparky

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.

Spark and spark plug are semantically related. Sometimes you can use "Spark" instead a noun phrase "Spark plug".