tidy vs hefty

tidy is a noun but hefty is not a noun.

Word	Noun	Adjective	Verb	Adverb
tidy	Yes	Yes	Yes	No
hefty	No	Yes	No	No

As adjectives, tidy and hefty are synonyms defined as:

Other synonyms of tidy include goodish, goodly, healthy, respectable, sizable, sizeable.

tidy (noun)	hefty (noun)
receptacle that holds odds and ends (as sewing materials)

tidy (adjective)	hefty (adjective)
marked by order and cleanliness in appearance or habits	large in amount or extent or degree
large in amount or extent or degree	of considerable weight and size
(of hair) neat and tidy	(of a person) possessing physical strength and weight; rugged and powerful

tidy (verb)	hefty (verb)
put (things or places) in order