I am using the_excerpt() method to display some wordings from the blog posts.
I have read the post from this link.
http://codex.wordpress.org/Plugin_API/Filter_Reference/excerpt_length
But my situation is different.
I am displaying some wordings from the posts in two places.
In the first place I want to display 20 words and in the 2nd place I want to display 50 words.
So what will I do for this?
The top answer to this question handles dynamically altering the length of your excerpt using a custom excerpt function.