Someone with a more conservative tolerance may have more of their portfolio in bonds and cash compared to stocks; someone with a more aggressive tolerance may have a higher portion of their portfolio in stocks.
One way to gauge your risk tolerance is to take a risk tolerance questionnaire. These are typically a short set of survey questions that will help you understand what your risk tolerance is based on the responses you select. Someone with a more conservative tolerance may have more of their portfolio in bonds and cash compared to stocks; someone with a more aggressive tolerance may have a higher portion of their portfolio in stocks.