For this context, prodigy only applies to children. I'd never call an adult a prodigy except for they were a "former child prodigy". Somewhere along the line y

For this context, prodigy only applies to children. I'd never call an adult a prodigy except for they were a "former child prodigy". Somewhere along the line you convert from child prodigy to genius assuming you maintained your ability above the rest of the pack.