economical vs scotch

economical is not a noun while scotch is a noun.

Word	Noun	Adjective	Verb	Adverb
economical	No	Yes	No	No
scotch	Yes	Yes	Yes	No

As adjectives, economical and scotch are synonyms defined as:

Other synonyms of economical include frugal, sparing, stinting.

economical (noun)	scotch (noun)
	a slight surface cut (especially a notch that is made to keep a tally)

economical (adjective)	scotch (adjective)
of or relating to an economy, the system of production and management of material wealth	avoiding waste
using the minimum of time or resources necessary for effectiveness
avoiding waste

economical (verb)	scotch (verb)
	make a small cut or score into
	hinder or prevent (the efforts, plans, or desires) of