inferior vs lowly

inferior is a noun but lowly is not a noun.

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

inferior (noun)	lowly (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

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