A Strength check, a Dexterity check, a Charisma (Persuasion) check, a Wisdom (Perception) check—those are all examples of ability checks. Are attack rolls and saving throws basically specialized ability checks? They aren't.

Are attacks strength checks 5e?

Strength check falls under ability checks. The game makes a clear distinction that melee attacks are NOT ability checks.

What is considered an ability check 5e?

An ability check tests a character's or monster's innate talent and training in an effort to overcome a challenge. The GM calls for an ability check when a character or monster attempts an action (other than an attack) that has a chance of failure. When the outcome is uncertain, the dice determine the results.