big vs tall

big is not a noun while tall is a noun.

Word	Noun	Adjective	Verb	Adverb
big	No	Yes	No	Yes
tall	Yes	Yes	No	No

big (noun)	tall (noun)
	a garment size for a tall person

big (adjective)	tall (adjective)
above average in size or number or quantity or magnitude or extent	great in vertical dimension; high in stature
conspicuous in position or importance	impressively difficult
given or giving freely	too improbable to admit of belief
generous and understanding and tolerant	lofty in style
marked by intense physical force	having a specified height
significant
prodigious
serious or severe
loud and firm
(of animals) fully developed
in an advanced stage of pregnancy
feeling self-importance
exhibiting self-importance