prehistoric can be used as an adjective, indicating that something occurred before written language and historical records. The rules associated with the word in this capacity involve its use to describe events, objects, or people of a particular era in the past.
1. The dig team uncovered a prehistoric temple.
2. My family had to cook prehistoric meals due to the lack of ingredients.
3. The anthropologist studied the prehistoric remains of lost civilizations.
it is important to note that this word should not be used to describe something recent; it's generally accepted only for things that existed hundreds or even thousands of years prior. Additionally, this word should not be used in phrases that indicate ongoing activity, as it typically only applies to objects, events, or people that occurred in the past.