https://dictionary.cambridge.org/dictionary/learner-english/factualFactual programs这个例子就不错 programs about facts/actual program: they’re actually programs (TV shows), not commercials (ads)
https://www.merriam-webster.com/dictionary/actualActual room就不能用factual room代换 (room regardingfacts??? Makes no sense to me)
https://www.merriam-webster.com/dictionary/factualFactual aspect: aspect regrading factsActual aspect: it’s actually an aspect/ correct aspect 一般不会这样用所以要看情况可以多看几个例句或字典 有时候差异很细微或抽象 只能靠累积经验来判断