Hereditary disease and Polygenic disease

Hereditary disease noun - A disease or disorder that is inherited genetically.

Polygenic disease and hereditary disease are semantically related. In some cases you can replace phrase "Polygenic disease" with "Hereditary disease", this phrases are similar.

Polygenic disease noun - An inherited disease controlled by several genes at once.

Hereditary disease and polygenic disease are semantically related. You can use "Hereditary disease" instead a noun phrase "Polygenic disease".