To ‘turn out’ is to have a particular result or outcome, particularly a surprising one. “It turns out that the product we thought would be the most popular is actually not the best selling.” It can also mean that something was revealed or discovered. “It turned out that she was at fault all along.” “The culprit turned out to be my mother.” When something happens in a particular way you can talk about how it ‘turned out’. “How did your holiday turn out?” When people assemble or show up for something you can say they ‘turned out’. “Thousands of people turned out for the free concert in the town square.” 'Turnout' is also a noun referring to the number of people who attended something (especially an election). If you talk about someone 'turnout' you might also be referring to the way in which they are dressed. 'The whole families turnout was spectacular for the wedding.' In dance, a 'turnout' refers to the ability to rotate your legs outwards from the hip.