Nouns

(n)inferiorone of lesser rank or station or quality
(n)subscript, inferiora character or symbol set or printed or written beneath or slightly below and to the side of another character

Adjectives

(a)inferiorof or characteristic of low rank or importance
(a)inferiorof low or inferior quality
(a)subscript, inferiorwritten or printed below and to one side of another character
(a)inferiorhaving an orbit between the sun and the Earth's orbit“Mercury and Venus are inferior planets”
(s)inferiorlower than a given reference point“inferior alveolar artery”
(s)deficient, inferior, substandardfalling short of some prescribed norm“substandard housing”