Word counts in the content browser are computed for CMS entries only. For static pages and components, computing a word count up front would require fully scanning every page of the site just to browse the list, so the connector deliberately skips it — the number you see next to a pages folder is a page count, and the words figure for page groups shows as zero/"—".
A page showing no word count is not empty. The real, counted word total for a page appears after you send it, on the Runs page (per work unit and per run).