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 Examples. Chiasmus. Chiasmus is the term for a rhetorical device in which a sentence or phrase is followed by a sentence or phrase that reverses the structure and order of the first one. In chiasmus, the words do not have to be repeated-the second sentence does not just reverse the words of the first sentence. Different words can be used. The key is that the sentence is grammatically the same, just reversed. Writers and speakers use chiasmus for the effect.