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 (pronounced ky-AZ-mus) is a rhetorical device that originates from the Greek chiazo, meaning âto shape like a letter Xâ. It is a figure of speech in which the second half of an expression is reversed to mirror the first half, i.e. A/B, B/A (where the letters represent words, phrases or parts of speech).