Teaser which refers to the first 55 words of the post’s content. When typing a long post you can insert the <!–more–> to show trimmed text.
2. Excerpt
An excerpt is a condensed description of your blog post and refers to the summary entered in the Excerpt field of the Write Post SubPanel (see Advanced Editing). The excerpt is used to describe your post in RSS feeds and is typically used in displaying search results. The excerpt is sometimes used in displaying the Archives and Category views of your posts. The Template Tag the_excerpt() can be used to access the contents of this field.
