aesthetical vs esthetic

aesthetical is not a noun while esthetic is a noun.

Word	Noun	Adjective	Verb	Adverb
aesthetical	No	Yes	No	No
esthetic	Yes	Yes	No	No

As adjectives, aesthetical and esthetic are synonyms defined as:

aesthetical and esthetic: concerning or characterized by an appreciation of beauty or good taste

Other synonyms of aesthetical include aesthetic, esthetical.

aesthetical (noun)	esthetic (noun)
	(philosophy) a philosophical theory as to what is beautiful

aesthetical (adjective)	esthetic (adjective)
concerning or characterized by an appreciation of beauty or good taste	concerning or characterized by an appreciation of beauty or good taste
	relating to or dealing with the subject of aesthetics
	aesthetically pleasing