I only included the pronunciation because you used a version of "graduate" in your original comment that has a different pronunciation and different meaning. (gra-jə-wāt vs. gra-jə-wət)

> a graduate degree may encompass both master's and doctoral degrees, which would only serve to obscure the meaning.

Nope, 99% of the time "graduate degree" == "master's degree". Usually "postgraduate degree" is used to refer to doctoral degrees. "graduate degree" is very common and generally unambiguous.

"undergraduate degree" = bachelor's degree, etc.

"graduate degree" = master's degree, etc.

"postgraduate degree" = doctorate, etc.

> Nope, 99% of the time "graduate degree" == "master's degree". Usually "postgraduate degree" is used to refer to doctoral degrees.

I've never seen people use the terms this way, and every source I find confirms what I have consistently seen in use, that “graduate degree” and “post-graduate degree” are synonyms that refer to academic (usually not professional, though that varies by context) degrees which typically require a preceding degree of bachelor’s or higher.

>I only included the pronunciation because you used a version of "graduate" in your original comment that has a different pronunciation and different meaning.

You should really learn about linguistic morphology.

Sorry, but those are very ambiguous.