lowly vs inferior

lowly is not a noun while inferior is a noun.

Word	Noun	Adjective	Verb	Adverb
lowly	No	Yes	No	No
inferior	Yes	Yes	No	No

lowly (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

lowly (adjective)	inferior (adjective)
low or inferior in station or quality	written or printed below and to one side of another character
inferior in rank or status	of or characteristic of low rank or importance
of low birth or station (`base' is archaic in this sense)	of low or inferior quality
used of unskilled work (especially domestic work)	having an orbit between the sun and the Earth's orbit
	lower than a given reference point
	falling short of some prescribed norm