niebla
fog
nebula
a cloud of gas and dust in space
Niebla means fog and can be remembered by its similarity to the English word nebula0, which is a cloud of gas and dust in space0, similar to how fog is a cloud near the ground.
noun
- fogA thick mist or fog that reduces visibilityLa niebla densa hizo difícil conducir. // The dense fog made it difficult to drive.