Omen and Word to wise

Omen noun - Something believed to be a sign or warning of a future event.

Word to wise and omen are semantically related In some cases you can use "Word to wise" instead a noun "Omen".

Omen and word to wise are semantically related in indication topic. Sometimes you can use "Omen" instead a noun phrase "Word to wise", if it concerns topics such as piece of advice, notice of possible occurrence.