powdered mustard vs dry mustard

powdered mustard and dry mustard both are nouns.

Word	Noun	Adjective	Verb	Adverb
powdered mustard	Yes	No	No	No
dry mustard	Yes	No	No	No

As nouns, powdered mustard and dry mustard are synonyms defined as:

powdered mustard and dry mustard: a substance such that one to three tablespoons dissolved in a glass of warm water is a homemade emetic

powdered mustard (noun)	dry mustard (noun)
a substance such that one to three tablespoons dissolved in a glass of warm water is a homemade emetic	a substance such that one to three tablespoons dissolved in a glass of warm water is a homemade emetic