SEO Title
Title tags are often used on search engine results pages (SERPs) to display preview snippets for a given page and are important for both SEO and social sharing purposes. The optimal format for SEO title(s) is as follows - Primary Keyword - Secondary Keyword | Brand Name
This is the search description that appears in the window tab as well.
SEO Meta Description
The Meta description of a web page is meant to be an accurate and concise description of a page’s content. This is critical to both the user experience and search engine optimization. It creates value in 3 specific areas: relevancy, browsing, and in-search engine results page.