n. someone who visits a person or place
He was a regular visitor to her house.

adj. coming from nature and not made or caused by people
Air and water are natural resources.

n. a walking path through a forest, field, etc.
There's a trail through the woods.

adv. without anyone or anything else
I don’t like going out alone at night.

n. the slow process of the wearing away of the earth’s surface by wind, water, or other forces
You can see erosion on the sides of some mountains or hills.

n. the top layer of earth in which plants grow
Cover the seeds with a thin layer of soil.

v. to get hurt
More than 180 people died or injured.

adj. unable to find your way
We always get lost in London.