iota vs smidgen

iota and smidgen both are nouns.

Word	Noun	Adjective	Verb	Adverb
iota	Yes	No	No	No
smidgen	Yes	No	No	No

As nouns, iota and smidgen are synonyms defined as:

Other synonyms of iota include scintilla, shred, smidge, smidgeon, smidgin, tittle, whit.

iota (noun)	smidgen (noun)
the 9th letter of the Greek alphabet	a tiny or scarcely detectable amount
a tiny or scarcely detectable amount