Sequence (noun)

1. A particular order in which related events, movements, or things follow each other.
2. A series of related events or things that happen one after the other.
3. A set of related things that are arranged or occur in a specific order.

Origin:

Late middle english sequencia, from latin sequentia, from sequent-, sequens present participle of sequi to follow.

Examples:

1. The sequence of events leading up to the accident was unclear.
2. The film's soundtrack is a sequence of haunting melodies.
3. The DNA sequence determines the genetic information of an organism.
4. The sequence of steps involved in solving the problem was carefully planned.
5. The dance routine was a sequence of movements performed in a specific order.