unity how to wait in the script code example

Example 1: wait time in unity

using System.Collections;

private void Start()
{
	StartCoroutine(Wait());
}

IEnumerator Wait()
{
	//To wait, type this:
  
  	//Stuff before waiting
	yield return new WaitForSeconds(/*number of seconds*/);
  	//Stuff after waiting.
}

Example 2: wait in unity

IEnumerator wait(float waitTime){ //creating a function
        yield return new WaitForSeconds(waitTime); //tell unity to wait!!
    }
    
    void Start(){
    	print("start");
        wait(1); ///using function
        print("Good night")
    }