White Hat SEO
White hat SEO utilizes techniques and methods to improve the search engine rankings of a website which don't run afoul of search engine (mainly Google) guidelines.High ,Some white hat SEO techniques include: high quality content development, website HTML optimization and restructuring, link acquisition campaigns supported by high quality content and manual research and outreach.Steady, gradual, but lasting growth in rankings.
Black Hat SEO
Black Hat SEO exploits weaknesses in the search engine algorithms to obtain high rankings for a website. Such techniques and methods are in direct conflict with search engine guidelines.
Very Low (not wholesome at all if you ask those in charge of cleaning search engine result page spam),Some black hat SEO techniques include: link spam, keyword stuffing, cloaking, hidden text, and hidden links.Quick, unpredictable, and short-lasting growth in rankings.