Final answer:
Both mortgage bankers and savings and loan associations primarily focus on providing mortgage loans to homebuyers or real-estate developers and builders.
Step-by-step explanation:
The main similarity between a mortgage banker and a savings and loan association regarding mortgage loans is that both are financial institutions that primarily focus on providing housing-related loans.
Both types of entities will take deposits and then issue loans, specifically mortgage loans to homebuyers or real-estate developers and builders.
This was particularly notable from the 1930s until the 1980s when federal law mandated savings and loan associations to concentrate on housing-related loans, although mortgage bankers also primarily deal with mortgage lending.