IPA: /ˈnjuːzˌbreɪk/
KK: /ˈnuːzˌbreɪk/
A sudden announcement of important news, often interrupting regular programming or activities.
The newsbreak about the election results surprised everyone in the room.
Newsbreak is formed from "news" (from Old English *nēos*, meaning new information or tidings) and "break" (from Old English *brecan*, meaning to shatter or interrupt). The word "newsbreak" refers to the interruption or revelation of new information.
Think of 'new information' ('news') being 'interrupted' or 'revealed' ('break') — that's what a newsbreak means.
No commonly confused words.