11th house gives us money from regular works such as from a company job where as 5th house gives you money from non-regular works such as freelancing or film director or writers
11th house works are mostly time bound and repetitive like working in a Software company from 10am to 5pm every day where as 5th house works are not time bounded for example writers, they need not follow any time schedule , they can sell their creative products whenever they want to , so 5th house jobs are not time bound or scheduled where as 11th house jobs are time bound, repetitive and scheduled.
11th house jobs are mostly no risk kind of jobs whereas 5th house jobs are more risky such as investing money on stock or producing a movie , jobs which are more risk prone .For instance a Writer created a story and when he sells it he doesn’t know whether it would be a success or not , Another example take about Film Producers they don’t know exactly how much money they will earn at box office collection in some cases they are huge big losses also so these are high risk professions. But 11th house jobs are one where we can predict the earned regular income
11th house is predictable income where as 5th house is unpredictable income.