Nouns

(n)abovean earlier section of a written text“for instructions refer to the above”

Adjectives

(s)aboveappearing earlier in the same text“flaws in the above interpretation”

Adverbs

(r)above, supra(in writing) at an earlier place“see above”
(r)above, higher up, in a higher place, to a higher placein or to a place that is higher