Signal and Whistling

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

Whistling and signal are semantically related. In some cases you can replace term "Whistling" with "Signal", this nouns are similar.

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

Whistling noun - The act of signalling (e.g., summoning) by whistling or blowing a whistle.

Signal and whistling are semantically related. Sometimes you can use "Signal" instead a noun "Whistling".

Nearby Words: whistle, whistled, whist, whistler