grand vs important

grand is a noun but important is not a noun.

Word	Noun	Adjective	Verb	Adverb
grand	Yes	Yes	No	No
important	No	Yes	No	No

grand (noun)	important (noun)
a piano with the strings on a horizontal harp-shaped frame; usually supported by three legs
the cardinal number that is the product of 10 and 100

grand (adjective)	important (adjective)
used of a person's appearance or behavior; befitting an eminent person	of great significance or value
extraordinarily good or great; used especially as intensifiers	of extreme importance; vital to the resolution of a crisis
the most important and magnificent in adornment	important in effect or meaning
of behavior that is impressive and ambitious in scale or scope	having or suggesting a consciousness of high position
large and impressive in physical size or extent	having authority or ascendancy or influence
of high moral or intellectual value; elevated in nature or style
of or befitting a lord
ostentatiously rich and superior in quality