bath powder vs dusting powder

bath powder and dusting powder both are nouns.

Word	Noun	Adjective	Verb	Adverb
bath powder	Yes	No	No	No
dusting powder	Yes	No	No	No

As nouns, bath powder and dusting powder are synonyms defined as:

bath powder and dusting powder: a fine powder for spreading on the body (as after bathing)

Other synonyms of bath powder include toilet powder.

bath powder (noun)	dusting powder (noun)
a fine powder for spreading on the body (as after bathing)	a fine powder for spreading on the body (as after bathing)