miniscule vs minuscule

miniscule is not a noun while minuscule is a noun.

Word	Noun	Adjective	Verb	Adverb
miniscule	No	Yes	No	No
minuscule	Yes	Yes	No	No

As adjectives, miniscule and minuscule are synonyms defined as:

miniscule (noun)	minuscule (noun)
	a small cursive script developed from uncial between the 7th and 9th centuries and used in medieval manuscripts
	the characters that were once kept in bottom half of a compositor's type case

miniscule (adjective)	minuscule (adjective)
extremely small	of or relating to a small cursive script developed from uncial; 7th to 9th centuries
	lowercase
	extremely small