Code coverage means, how well your test set is covering your source code. i.e. to what extent is the source code covered by the set of Test cases. As mentioned in above answers, there are various coverage criteria, like paths, conditions, functions, statements, etc.
Chiasmus. Definition: Chiasmus is a specific type of parallelism. It consists of two parallel phrases in which corresponding words or phrases are placed in the opposite order.
Chiasmus is a figure of speech in which words, grammatical constructions, or concepts are repeated in reverse order, in the same or a modified form.In other words, the clauses display inverted parallelism.hiasmus is a figure of speech in which words, grammatical constructions, or concepts are repeated in reverse order, in the same or a modified form.