A pillar page is a long, comprehensive piece of content that covers everything there is to know about a specific topic. It is the go-to resource for anyone looking for information on that topic. A blog post, on the other hand, is a shorter piece of content that focuses on a specific aspect of the topic. It is usually part of a series of posts on the same topic, with each post covering a different aspect. Together, these posts provide an overview of the entire topic. However, a single blog post can also stand on its own as a resource for someone looking for information on a specific subtopic.