There are several synonyms for the term "fertile area" that can be used to describe a region or land that is rich in nutrients and capable of sustaining plant and animal life. Some of these synonyms include "productive zone," "fertile ground," "fertile plain," "agricultural land," "arable land," and "fertile region." These terms may be used in different contexts to refer to varying types of fertile areas. For instance, "productive zone" could describe an area that is rich in natural resources and minerals, while "fertile ground" may refer to soil that is capable of growing abundant crops. Overall, these synonyms help to paint a clear picture of a bountiful and prosperous environment.