Difference between destorying other object on "Collision" and on "Trigger"?

Unity Engine
,
1

So I was following a tutorial, where we make a sword attached to the player character and when the sword touches the enemy, the enemy object got destroyed. However, I made a mistake while following the tutorial, and it causes both the player and enemy to get destroyed when the sword touched the enemy.

Below is the correct code, when I use this code only the enemy is destroyed

void OnTriggerEnter2D(Collider2D other)
    {
        if (other.gameObject.tag == "Enemy")
        {
            Destroy(other.gameObject);
        }
    }

Below is the wrong code I used, which cause both the player and enemy to get destroyed

void OnCollisionEnter2D(Collision2D other)
{
if (other.gameObject.tag == "Enemy")
        {
            Destroy(other.gameObject);
        }
}

I tried to search the difference between Collision and Trigger, and the only answer I found is that Trigger can be permeated by other object unlike collision. But I don’t think that answer the question on why when I use OnCollisionEnter both player (including the sword which was a child object of the player) and the enemy got destroyed, while only the enemy got destroyed when using OnTriggerEnter. Can anyone explain why?

2

There’s nothing that causes behavior like that. You’re going to have to investigate yourself to figure out why it’s doing that, I’d suggest making sure there’s no other scripts that can cause the behavior, or that there’s no duplicate components on objects.

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