Most grants fund a project, not an organization or a company. A project has a beginning, middle and end. A project has goals, objectives, outcomes. A grant project has a plan that outlines over a timeline exactly how the funding will be used to achieve the specific project goals. Project management is an entire discipline with tools and processes.
Project orientation makes grants different from debt or equity funding. And that orientation is often new to entrepreneurs, who are appropriately focused on their company. Sometimes first-time grant writers will try to use business plan language for grants, because the business plan already has lots of details. That can make a grant proposal less focused on the specific project to be funded than it needs to be. Instead, grant proposals need to focus on the specific project in order to be competitive with other grants.