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functional cohesion comparison table

Subject	use	is a kind of	have advantages	achieve when	has definition
cohesion		software quality			A measure of the extent to which related aspects of a system are kept together in the same module, and unrelated aspects are kept out
functional cohesion	if possible	cohesion	It is easier to understand a module when you know all it does is generate one specific output and has no side effects It is easier to replace a functionally cohesive module with another that performs the same computation functionally cohesive module is much more likely to be reusable	a module only performs a single computation, and returns a result, without having side-effects	A form of cohesion in which modules which together perform a function (a computation that returns a result and has no side effects) are kept together, and everything else is kept out

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