The degree of jinās is assessed along four independent dimensions: letter identity, letter count, vocalization or form, and letter order. A difference in even one prevents full formal identity.
DimensionQuestionIdentityAre the constituent letters of the same kind?NumberAre there equally many letters?FormDo their vowels and rests agree?OrderAre the letters arranged in the same sequence?
Agreement in all four yields complete jinās. The specific mode of disagreement determines the classification of an incomplete case.