Jinās is a formal similarity between two expressions. The four standard tests for complete jinās are agreement in the identity, number, vocalic form and order of letters. A difference in one of these directs the analysis toward one of the incomplete varieties.
In muḥarraf, vocalization can distinguish the pair; in muṣaḥḥaf, the skeleton and dots become relevant; in qalb, the letter sequence differs.
The analyst must still establish the separate meanings of the expressions. Attractive repetition alone does not establish a meaningful example of jinās.