Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE Person ( name varchar(20), age INTEGER, city TEXT, gender TEXT, job TEXT )
TABLE: CREATE TABLE PersonFriend ( name varchar(20), friend varchar(20), year INTEGER )

### Question ###
Please return me a histogram to show the friends, and ages of all people who are older than the average age of a person?, list in desc by the x-axis.

### Accurate SQL ###

SELECT friend, age FROM Person AS T1 JOIN PersonFriend AS T2 ON T1.name = T2.friend WHERE T1.age > (SELECT AVG(age) FROM Person) ORDER BY friend DESC