Underlying psychosis, psychotic syndromes, psychotic functioning, psychotic tendencies, psychotic disorders, psychotic proneness, psychotic process, psychotic states, psychotic episodes, psychotic thinking, psychotic decompensation, and psychotic phenomena. These are some of the familiar terms that most clinicians use or encounter in their practices. However, too often these myriad terms are used synonymously or discussed in a way that blurs relevant distinctions and leads to fuzzy diagnostic understanding. Terminology is important, as long as one understands the distinctions and has a way of organizing the terms into some sort of meaningful framework. A conceptual understanding of the complexities of psychosis requires a discussion of some of the different and contrasting approaches to thinking about psychosis.