The phrase "last stage" is often used to describe the final phase or period of something. However, there are several other phrases that can be used interchangeably with this phrase. These include "final stage," "end phase," "completion phase," "concluding phase," "finishing stage," "ultimate stage," and "endgame phase." Each of these phrases indicates that something is coming to an end and that the final steps are being taken towards completion. Employing these varying phrases adds to a writer's arsenal when conveying progress and highlighting that something is reaching its final stages. It is up to the writer to determine which phrase best fits the context and overall tone of their work.