milk shake vs malted

milk shake and malted both are nouns.

Word	Noun	Adjective	Verb	Adverb
milk shake	Yes	No	No	No
malted	Yes	Yes	No	No

As nouns, malted is a hyponym of milk shake; that is, malted is a word with a more specific, narrower meaning than milk shake:

milk shake: frothy drink of milk and flavoring and sometimes fruit or ice cream
malted: a milkshake made with malt powder

Other hyponyms of milk shake include eggshake, frappe, malt, malted milk.

milk shake (noun)	malted (noun)
frothy drink of milk and flavoring and sometimes fruit or ice cream	a milkshake made with malt powder

milk shake (adjective)	malted (adjective)
	of grain that has been converted into malt