As nouns the difference between flavin and flavinoid
is that flavin is any of a class of tricyclic heterocyclic compounds derived from riboflavin; found especially as the adenine dinucleotide (FAD while flavinoid is flavonoid.
As a proper noun Flavin
is {{surname|from=Irish}} of southern Irish descent, from the Gaelic {{term|Ó Flaithimhín|lang=ga}}.