Signal and Warning signal

Signal noun - An object intended to give public notice or warning.

Warning signal and signal are semantically related In some cases you can use "Warning signal" instead a noun "Signal".

Nearby Words: signaled, signalize, signally, signalling, signaling

Warning signal noun - An automatic signal (usually a sound) warning of danger.

Signal and warning signal are semantically related in alarm topic. You can use "Signal" instead a noun phrase "Warning signal", if it concerns topics such as silent signal of warning.