smidgen vs smidgin

smidgen and smidgin both are nouns.

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

As nouns, smidgen and smidgin are synonyms defined as:

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

smidgen (noun)	smidgin (noun)
a tiny or scarcely detectable amount	a tiny or scarcely detectable amount