Tools and methods are described herein that allows for measuring and using the relationship between artifacts of a software design, such as requirements, test plans, and so on. The relationship can be quantified by determining a relationship quotient for quantifying a similarity between components of software design artifacts and presenting the quantified relationships to a user, such as a software designer, so that he or she can account for the relationship between such components during design changes and so on. The relationship quotient is made more representative of substantive similarity by selecting the key terms that are to be submitted to a similarity analysis such that words that are too common in the English language, such as conjunctions, articles, etc., are not used. Ubiquity of certain key terms in an enterprise is accounted for by adding a term significance weight to the similarity analysis. The similarity analysis is made contextual, for instance, by the use of inputs from domain ontology including Entity Descriptions, and Entity Relationships.