microscopical vs microscopy

microscopical is not a noun while microscopy is a noun.

Word	Noun	Adjective	Verb	Adverb
microscopical	No	Yes	No	No
microscopy	Yes	No	No	No

microscopical (noun)	microscopy (noun)
	research with the use of microscopes

microscopical (adjective)	microscopy (adjective)
of or relating to or used in microscopy
so small as to be invisible without a microscope
visible under a microscope; using a microscope