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 In poetry, a type of rhetorical balance in which the second part is syntactically balanced against the first, but with the parts reversed. Coleridge: âFlowers are lovely, love is flowerlike.â In prose this is called antimetabole.