Differences between DIV and SPAN

I recently went back and re-read an article which explained the differences between the <SPAN> and <DIV> tags in HTML. One thing I seemed to forget was that when using the <DIV> tag it consequently breaks paragraphs. The tag predominantly acts as a paragraph start/end and while you can have paragraphs within a <DIV> you can't have a <DIV> inside a paragraph. The primary attributes of the <DIV> tag are: align (left|center|right|justify) style name More info can be found here: http://webdesign.about.com/library/weekly/aa011000a.htm