piano vs pianistic

piano is a noun but pianistic is not a noun.

Word	Noun	Adjective	Verb	Adverb
piano	Yes	Yes	No	Yes
pianistic	No	Yes	No	No

piano (noun)	pianistic (noun)
a keyboard instrument that is played by depressing keys that cause hammers to strike tuned strings and produce sounds
(music) low loudness

piano (adjective)	pianistic (adjective)
(used chiefly as a direction or description in music) soft; in a quiet, subdued tone	skilled at or adapted for the piano
	of or relating to the piano

piano (adverb)	pianistic (adverb)
used as a direction in music; to be played relatively softly