Precognition is the ability to see into the future.
There are three forms of precogniction.
I - Dreams: Dreams are the most common, but yet the least trust worthy. How do you know it wasn't just a dream? You don't until it happens. Do not base your actions off of what you see in this form, unless it's extreme like death. Although it is rare for someone to see a person dying.
II - Visions: Visions are more trustworthy than dreams, but you still should not base your actions off of them. When experiencing a vision, you may simply think of something random wothout trying to. A picture may suddenly pop into your head with you have know idea of how it happened. Vinsions are short, and only last a few seconds.
III - Feelings: Ever had a feeling something bad was about to happen, and then it did? That is an example of Feelings. You should always trust your feelings and be aware, for they are usually right. But don't take action quite yet. Simply observe, until you are sure something will happen.
The opposite of precogniction is Postcognition.