Harbinger and Omen

Harbinger noun - One that announces or indicates the later arrival of another.

Omen is a synonym for harbinger in sign topic. In some cases you can use "Omen" instead the word "Harbinger" as a noun or a verb, when it comes to topics like indication, herald. popular alternative

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

Harbinger is a synonym for omen in portent topic. You can use "Harbinger" instead the word "Omen" as a noun or a verb, if it concerns topics such as sign of something to come. popular alternative