Web Statistics Definitions
Hits mean retrieval of any item, like a page or a graphic, from a website. It shows the total hits per year, per month, per day etc.
Files mean total files retrieved from a web site. It is shown files per years, per month, per day etc.
Pages mean total pages called from a web browser for a website. It shows total pages retrieved per year, per month, per day etc.
Visits mean when first time web browser calls a website and view website in session it is counted as one visits. It shows total Number of person visited website per year, per month, per day etc.
Total size of Pages/ Files viewed from a web browser is measured in Kbytes. Is called as bandwidth of a website. It is shown by per year, per month, per day, per hour etc.
It shown referrers for a website. Referrers means request for a website arrived from which location.
User agents mean type of browser has accessed the website like Mozilla/3.0, Netscape Etc
It shows No of Visits from different Countries. Like from India N% from US N% etc
It Shows Keywords used at different search engine for finding a websites. It shows which Keyword is used frequently to find website.
A program (Search Engine) which run over a website for submitting sites to search engine. A program that automatically fetches Web pages. Spiders are used to feed pages to search engines. It's called a spider because it crawls over the Web. Another term for these programs is WebCrawler.
(Definitions gathered from http://www.website-designing.com/statfeatures1.htm)