I am trying to publish "keywords" in "Category and Keywords" section, when i click on keyword, publish button is disabled. Is there any way to publish a keyword? I have added a "taxonomy" mapping in my storage file and keywords will store in database.
As Pankaj mentioned, you cannot publish a single Keyword. On the delivery side we are only referring to taxonomies, and there is a specific reason for using that name.
A taxonomy consists of a nested hierarchy of Keywords defined in a tree structure. A Category is a general classification defining the root of a taxonomy and a Keyword defines a value within the taxonomy hierarchy.
So the Publish option is only available at Category level, and you can only publish it as a whole. When you update a single Keyword, you have to republish the entire taxonomy