1. Salient (adjective):
* Meaning: Prominent, conspicuous, or striking.
* Apex: There isn't a single "apex" for salient in this sense. It describes a quality, not a specific point or location.
2. Salient (noun):
* Meaning: In military terms, a salient is a projection of a line of fortifications or troops beyond the general line.
* Apex: The apex of a salient would be the point where the projection protrudes furthest out from the main line.
Therefore, to understand the "apex of salient", you need to know which meaning of "salient" is being used.