Diplomate and PhD

Diplomate noun - Medical specialist whose competence has been certified by a diploma granted by an appropriate professional group.

PhD and diplomate are semantically related In some cases you can replace term "PhD" with "Diplomate", this nouns are similar.

PhD noun - A doctorate usually based on at least 3 years graduate study and a dissertation; the highest degree awarded graduate study.

Diplomate and PhD are semantically related in pursuit topic. You can use "Diplomate" instead a noun "PhD".