process of people gathering mature crops or their products

To harvest means to collect what has been planted and grown in the ground. It is usually done by farmers. They can do this by picking crops. Crop failure (also known as harvest failure) is a loss or reduced crop yield due to plants being damaged, killed, or destroyed. Sometimes it brings famine.

Harvest, medieval image

"Harvest" can also mean to collect other things than plants such as cultivated bivalves including oysters, scallops, and other animals.