TERM: Page View, Page Displays or Unique Displayed Pages
The number of times a page (an analyst-definable unit of content) was viewed or displayed. The unique displayed pages is the amount of pages (without counting the same page twice) that were requested by an individual, this is interesting to look to know the performance of the website in time while content was added or modified.

Unique Visits Displayed Pages
TERM: Unique Visitors, Visits, Sessions
This figure displays in an accurate form the amount of unique individuals that visited the website, it is one of the most important values that should increase. Different tool providers use different methodologies to track sessions. Ask your tool provider how this metric is computed. A typical time-out period for a visit is 30 minutes, but this time period is configurable in many web analytics applications.

Visitors time out
Visits can be added together over time, but not over page views or over groups of content, because one visit can include multiple pages.
The Web Analytics Association defines Unique Visitors as:
The number of inferred individual people (filtered for spiders and robots), within a designated reporting timeframe, with activity consisting of one or more visits to a site. Each individual is counted only once in the unique visitor measure for the reporting period.
Authentication, either active or passive, is the most accurate way to track unique
visitors. However, because most sites do not require a user login, the
most predominant method of identifying unique visitors is via a persistent cookie
that stores and returns a unique id value. Because different methods are used to
track unique visitors, you should ask your tool provider how they calculate this
metric.
A unique visitor count is always associated with a time period (most often day, week,
or month), and it is a “non-additive” metric. This means that unique visitors can not
be added together over time, over page views, or over groups of content, because
one visitor can view multiple pages or make multiple visits in the time frame studied.
Their activity will be over-represented unless they are de-duplicated.
The deletion of cookies, whether 1st party or 3rd party, will cause unique visitors to be inflated over the actual number of people visiting the site. Users that block cookies may or may not be counted as unique visitors, and this metric is handled in different ways depending on the analytics tool used. Ask your tool provider how blocked cookies are managed in their tool: it is important to understand how this impacts other metrics with regard to these visitors.
TERM: Total Requested Pages
This is the number of total amount web pages displayed from the analyzed website.