commercial-grade vs commercial

commercial-grade is not a noun while commercial is a noun.

Word	Noun	Adjective	Verb	Adverb
commercial-grade	No	Yes	No	No
commercial	Yes	Yes	No	No

As adjectives, commercial-grade and commercial are synonyms defined as:

commercial-grade and commercial: of the kind or quality used in commerce; average or inferior

commercial-grade (noun)	commercial (noun)
	a commercially sponsored ad on radio or television

commercial-grade (adjective)	commercial (adjective)
of the kind or quality used in commerce; average or inferior	connected with or engaged in or sponsored by or used in commerce or commercial enterprises
	of or relating to commercialism
	of the kind or quality used in commerce; average or inferior
	profit oriented