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.
The term chiastic derives from the mid-17th century term chiasmus, which refers to a crosswise arrangement of concepts or words that are repeated in reverse order. Chiasmus derives from the Greek word khiasmos, a word that is khiazein, marked with the letter khi.From khi comes chi.he two mentions of the 150 days refer to the same period, and the first 40 days (7:13,17) are part of the 150 days. All this is consistent with the date in 8:4.