1. The most important or fundamental idea, point, or communication that someone wants to convey
The core message of the campaign is that education empowers communities.
A mensagem central da campanha é que a educação capacita as comunidades.
2. The primary theme or key takeaway intended to be understood by an audience
Despite the lengthy presentation, the core message was clear: we need to innovate.
Apesar da apresentação longa, a mensagem central era clara: precisamos inovar.