I there: i want to know what is the name / buzzterm (if any) where i have a process and it produce two incomes (monetary or not), for example if i sell a t-shirt with a slogan that say "save the whales" then i profit directly from the t-shirt sales and i also earn a boost from marketing, some sort of 1 ->2. it usually happens with tax-deduction and charitable foundations.
ps: In business terms, synergy is equal to 1+1>2 (so it is not the opposite but close enough).