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 products (product_id VARCHAR)
TABLE: CREATE TABLE CHARACTERISTICS (characteristic_name VARCHAR, characteristic_id VARCHAR)
TABLE: CREATE TABLE product_characteristics (product_id VARCHAR, characteristic_id VARCHAR)

### Question ###
What is the characteristic name used by most number of the products?

### Accurate SQL ###

SELECT t3.characteristic_name FROM products AS t1 JOIN product_characteristics AS t2 ON t1.product_id = t2.product_id JOIN CHARACTERISTICS AS t3 ON t2.characteristic_id = t3.characteristic_id GROUP BY t3.characteristic_name ORDER BY COUNT(*) DESC LIMIT 1