What is the qualification for a giant if a 16 yr old boy is 6'6?

In general, the term "giant" can vary in definition depending on context, but in many cases, it refers to individuals who are significantly taller than average. For adults, a height of around 7 feet is often considered a benchmark for being classified as a giant. However, since the 16-year-old boy is already 6'6", he is well above the average height for males, suggesting he may continue to grow and possibly reach or exceed that "giant" threshold in adulthood.