The search engines, especially Google, determine the relevance of your content
and overall website by looking not only at the theme of your page and site but
also by looking at how often you mention other words that are synonymic with the
theme.

Determine the terms which are synonyms to your main phrase by using a ~ search.

~blog

returns:

blogger

weblog

blogs

blog

the words returned in bold on Google are the synonyms.

No tags

This post outlines how to create a silo structure in WordPress by implementing your primary content on pages rather than posts.

Then onward, build your site using the following strategy:

1. Put your main content on static pages

Static pages (Write / Page) let you create content that lives outside of the blog chronology.

Contrary to posts, static pages can be hierarchically arranged using page parents (to the right in the editor). Your site structure could look like this:

/
/section1
/section1/topic1
/section1/topic2
/section2
/section2/topic1
/section2/topic2

… which is the most natural way to organize a site.

Also available on this page is a plugin which will create a sidebar navigation menu of your pages.

plugins · WordPress