What is the difference between a financial manager, an account manager and a securities broker in a securities company?

Both the wealth management manager and the account manager are full-time employees, and the formal establishment is accompanied by social security. Brokers belong to cooperative relationship, some have basic salary and no social security. Financial managers prefer funds and account managers to do everything, as long as it is business. The account managers and brokers on business cards are both printed account managers, and the concept of brokers has not been widely understood by the public.