Any components with similar functionality used on multiple pages must be labeled identically and function identically. (e.g. a header Search field must be labeled the same on all pages)
During manual evaluation, identify elements that repeat on multiple pages. Any element such as a search bar or a navigation must have the same accessible name and functionality on all pages it appears on.
Elements repeating on multiple pages are usually found in the header and footer, but can also be in sidebars. Multiple pages in the context of this criterion is not limited to only elements that appear on every page. If an element repeats itself on all "News" pages for example, it would also need to be identified the same on all the pages it appears on.