What is keyword proximity?

[George Peter]

It prefers to a scale which measures the difference between two keywords on a web page.

[kumar29]

Keyword proximity is refers to how close together the words are. You might have a list of keywords relevant to your website that includes fishing pole, fishing equipment, tackle boxes, and custom fishing rods, for instance. Great. But how do you place them to be most effective in terms of Search Engine Optimization?