Ordinal numbers show the position of something compared to other objects. For example:
I came third (3rd) in the cooking contest. There were a total of 12 people in the competion and I was placed at number 3.
An easy way to remember the difference between the two is:
ordinal = order
idioms with ordinal numbers
Here are the most common idioms that contain ordinal numbers.
![first ordinal number idioms](https://mingle-ish.com/wp-content/uploads/2021/04/first-1-300x212.jpg)
![second ordinal number idioms](https://mingle-ish.com/wp-content/uploads/2021/04/second-1-300x212.jpg)
![third ordinal number idioms](https://mingle-ish.com/wp-content/uploads/2021/04/third-300x212.jpg)