low-level vs inferior

low-level is not a noun while inferior is a noun.

Word	Noun	Adjective	Verb	Adverb
low-level	No	Yes	No	No
inferior	Yes	Yes	No	No

low-level (noun)	inferior (noun)
	a character or symbol set or printed or written beneath or slightly below and to the side of another character
	one of lesser rank or station or quality

low-level (adjective)	inferior (adjective)
lower in rank or importance	written or printed below and to one side of another character
at a low level in rank or importance	of or characteristic of low rank or importance
occurring at a relatively low altitude	of low or inferior quality
not intense	having an orbit between the sun and the Earth's orbit
	lower than a given reference point
	falling short of some prescribed norm