lowness vs inferiority

lowness and inferiority both are nouns.

Word	Noun	Adjective	Verb	Adverb
lowness	Yes	No	No	No
inferiority	Yes	No	No	No

As nouns, inferiority is a hyponym of lowness; that is, inferiority is a word with a more specific, narrower meaning than lowness:

lowness: a position of inferior status; low in station or rank or fortune or estimation
inferiority: the state of being inferior

Other hyponyms of lowness include lower rank, lower status, smallness.

lowness (noun)	inferiority (noun)
the quality of being low; lacking height	an inferior quality
a low or small degree of any quality (amount or force or temperature etc.)	the quality of being a competitive disadvantage
a feeling of low spirits	the state of being inferior
a position of inferior status; low in station or rank or fortune or estimation