The JSF Taglibs are of two.

HTML Tag lib

Core Tag lib

HTML Tag lib: This tag library contains all the tags that pertains all the tags that are to deal with forms and other HTML-specific stuff.

Core Tag lib: The Core Tag lib contains the tags that pertaining all the tags that are to deal with logic, validation, controller and other JSF-specific stuff.

The two tag libs are to be specified as follows:

<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>

<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>