metallurgist vs technologist

metallurgist and technologist both are nouns.

Word	Noun	Adjective	Verb	Adverb
metallurgist	Yes	No	No	No
technologist	Yes	No	No	No

As nouns, technologist is a hypernym of metallurgist; that is, technologist is a word with a broader meaning than metallurgist:

metallurgist: an engineer trained in the extraction and refining and alloying and fabrication of metals
technologist: a person who uses scientific knowledge to solve practical problems

Other hypernyms of metallurgist include applied scientist, engineer.

metallurgist (noun)	technologist (noun)
an engineer trained in the extraction and refining and alloying and fabrication of metals	a person who uses scientific knowledge to solve practical problems