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 chiasmus structure of the death oracle given to Adam in 3:19, is a link between man's creation from dust (2:7) to the return of his beginnings: you return, to the ground, since from it you were taken, for dust you are, and to dust, you will return..