Hereditary disease and Polygenic disorder

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

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

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

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