Endemic disease and Ecdemic

Endemic disease noun - A disease that is constantly present to a greater or lesser degree in people of a certain class or in people living in a particular location.

Ecdemic and endemic disease are semantically related. In some cases you can replace term "Ecdemic" with "Endemic disease", this terms are similar.

Ecdemic adjective - Of or relating to a disease that originates outside the locality in which it occurs.

Endemic disease and ecdemic are semantically related. You can use "Endemic disease" instead a noun "Ecdemic".