What part of speech is “competition”

'competition' is a noun that means a situation in which two or more persons or groups strive for superiority or a specific goal. It is a measure of how well an individual or group is able to use the resources available in order to achieve success in a certain area. The purpose of a competition can range from sport to academics and from artistic performance to marketing. It can even be held among people who disagree on some basic premises.

1. We prepared for weeks before the singing competition, but still didn't win the grand prize.

2. The chess competition brought together some of the world's best players.

3. The Math Olympiad was so intense, it almost felt like a competition between countries.