esthetical vs aesthetic

esthetical is not a noun while aesthetic is a noun.

Word	Noun	Adjective	Verb	Adverb
esthetical	No	Yes	No	No
aesthetic	Yes	Yes	No	No

As adjectives, esthetical and aesthetic are synonyms defined as:

esthetical and aesthetic: concerning or characterized by an appreciation of beauty or good taste

Other synonyms of esthetical include aesthetical, esthetic.

esthetical (noun)	aesthetic (noun)
	(philosophy) a philosophical theory as to what is beautiful

esthetical (adjective)	aesthetic (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