garment industry vs fashion business

garment industry and fashion business both are nouns.

Word	Noun	Adjective	Verb	Adverb
garment industry	Yes	No	No	No
fashion business	Yes	No	No	No

As nouns, garment industry and fashion business are synonyms defined as:

garment industry and fashion business: makers and sellers of fashionable clothing

Other synonyms of garment industry include apparel industry, fashion industry, rag trade.

garment industry (noun)	fashion business (noun)
makers and sellers of fashionable clothing	makers and sellers of fashionable clothing