The description of the prone condition says:
- A prone creature's only movement option is to crawl, unless it stands up and thereby ends the condition.
- The creature has disadvantage on attack rolls.
- An attack roll against the creature has advantage if the attacker is within 5 feet of the creature. Otherwise, the attack roll has disadvantage.
The description of the restrained condition says:
- A restrained creature's speed becomes 0, and it can't benefit from any bonus to its speed.
- Attack rolls against the creature have advantage, and the creature's attack rolls have disadvantage.
- The creature has disadvantage on Dexterity saving throws.
A grapple is described as a replacement for an Attack action:
When you want to grab a creature or wrestle with it, you can use the Attack action to make a special melee attack, a grapple. If you're able to make multiple attacks with the Attack action, this attack replaces one of them.
...but it doesn't say a grapple is an "attack roll".
Should we be interpreting attack rolls and Attack actions as separate things? Does that effectively mean that grapples (and other special melee attacks) get no advantage when trying to attack restrained or prone opponents?