manufacturing business vs manufacturer

manufacturing business and manufacturer both are nouns.

Word	Noun	Adjective	Verb	Adverb
manufacturing business	Yes	No	No	No
manufacturer	Yes	No	No	No

As nouns, manufacturing business and manufacturer are synonyms defined as:

manufacturing business and manufacturer: a business engaged in manufacturing some product

Other synonyms of manufacturing business include maker.

manufacturing business (noun)	manufacturer (noun)
a business engaged in manufacturing some product	a business engaged in manufacturing some product
	someone who manufactures something