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.
Symbiosis: Mutualism, Commensalism and Parasitism. Symbiosis is an interaction characterized by two or more species living purposefully in direct contact with each other. The term symbiosis includes a broad range of species interactions but typically refers to three major types: mutualism, commensalism and parasitism.Mutualism is a symbiotic interaction where both or all individuals benefit from the relationship.he term symbiosis includes a broad range of species interactions but typically refers to three major types: mutualism, commensalism and parasitism. Mutualism is a symbiotic interaction where both or all individuals benefit from the relationship.