yellow metal vs alpha-beta brass

yellow metal and alpha-beta brass both are nouns.

Word	Noun	Adjective	Verb	Adverb
yellow metal	Yes	No	No	No
alpha-beta brass	Yes	No	No	No

As nouns, yellow metal and alpha-beta brass are synonyms defined as:

yellow metal and alpha-beta brass: a brass that has more zinc and is stronger than alpha brass; used in making castings and hot-worked products

Other synonyms of yellow metal include Muntz metal.

yellow metal (noun)	alpha-beta brass (noun)
a brass that has more zinc and is stronger than alpha brass; used in making castings and hot-worked products	a brass that has more zinc and is stronger than alpha brass; used in making castings and hot-worked products