How we differentiate White hat and grey hat seo?

[AshokDixit89]

White Hat SEO: White Hat SEO utilizes techniques and methods to improve the search engine ranking of a website that don’t run a foul of search engine (mainly Google) Guidelines. It will give you a slow but lasting growth in ranking.
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.It may give you a quick but short lasting growth in search engine ranking.
Grey Hat SEO: Grey hat SEO (not white and not black but gray) is a technique that does not fully use the second technique above, or maybe combine of two. Perhaps this is also the transformation from white to black or black to white. It could be argued, this technique is a technique that uses black hat techniques to achieve results in white hat.