Difference between Google Webmaster Tool and Google Analytics:

Google Webmaster Tool reports on how search engines interact with websites, while Google Analytics reports on how users interact with websites.

Google Webmaster tool provides information about technical problems and how we can improve our site's visibility, whereas Google Analytics provide information about full website traffic statistics.

Webmaster tool's report includes website queries, impression, total clicks, clocks through rates. And webmaster tool inform us about crawl error, crawl stat, URL parameters, sitemaps, robots.txt tester, security issues, Google index status, mobile usability, international customer targeting, internal links, manual action, search analytics, mobile usability, structure data, data highlighter, HTML improvements, sitelinks.

But in Google Analytics we get full website traffic statistics including number of total visitors, number of unique visitors, total page view, average session duration, bounce rate and  percentage of new sessions.