Establish a difference between PR & SERP.

[ExpertWP]

Here is one of the difference between PR & SERP:
Page Rank(PR) is a numeric value that represents how important a page is on the web. Let’s call it Google’s rating or grade for your webpage (0 = lowest, 10 = highest).
And SERP means Search Engine Ranking Page. This is what you look at multiple times a day. It’s the (first) page of results Google gives you when you are searching for a keyword or a keyword combination.
For example: suppose you have the No 3 spot on the 1st page of Google on the term ‘social media marketing’. This means that your website has a SERP 3 on this specific combination of keywords.
In summary,Page Rank is the grade (1 to 10) your web page gets from headmaster Google.
SERP is the position of your website in Google’s search engine results based on a certain keyword combination.