Complete jinās requires identity of letter kind, count, vocalic form and sequence, coupled with a distinction between the intended senses. If there is no semantic distinction, the words may amount merely to repetition; the stylistic point lies in the difference of use.
The same form «ساعة» can denote the Resurrection in one place and a short duration in another. The ear registers identical wording, whereas interpretation shifts from one referent to another.
Its subdivisions also consider whether both occurrences belong to the same grammatical word class or belong to different classes, such as a noun and a verb.