In this article a contrast is made between the concepts of indeterminacy and well-formedness on the one hand, and the concepts of vagueness and exactness on the other hand. In the further distinction between determination (degree of vagueness) and specification (degree of generality) the author exemplifies with the genitive deverbal noun construction in Norwegian. Various approaches to the concept of context are discussed and Kubińsky’s vagueness model is applied to demonstrate that there are some areas of grammar, such as the categorial status of the parts of speech, where the question of membership very seldom arises, although gradience is present.