columns_priv column privileges within a table
dbprivileges for the databases
funcprivileges for functions
hostprivileges for the hosts
tables_privindividual column privileges for a table
userprivileges for the access by users
In each table privileges for uses are set by 'Y' or 'N' in the appropriate column for a privilege.
mysql>
mysql> SELECT Host, Db, User, Select_priv
-> FROM db WHERE (DB = "test");
mysql>