| Name | Description |
| Activity | A cohesive yet heterogeneous collection of tasks that achieves a set of related goals. |
| ActivityKind | A specific kind of activity. |
| Build | A scheduled part of a phase leading to an increment towards the final system. |
| BuildKind | A specific kind of build. |
| Document | A durable depiction of some of the problem's or system's properties. |
| DocumentKind | A specific kind of document. |
| Language | A set of interrelated model unit kinds, which can be used to construct models of certain kinds. |
| MethodologyElement | An entity that exists at the methodology level, either a template methodology element or a resource methodology element. |
| Model | A purpose-specific mental representation of the problem to solve or the system to build. |
| ModelKind | A specific kind of model. |
| ModelUnit | An atomic unit that created and used within a specific model to represent a portion of relevant information. |
| ModelUnitKind | A specific kind of model unit. |
| ModelUnitUsage | A specific usage of a given model unit on a given model. |
| ModelUnitUsageKind | A specific usage of a given model unit kind on a given model kind. |
| Notation | A set of perceptible artefacts (usually graphical) plus usage rules, which can be used to depict models of certain kinds. |
| Phase | A usually long stage performed at a certain level of abstraction and focus. |
| PhaseKind | A specific kind of phase. |
| ProjectElement | An entity that exists at the project level. |
| ResourceMethodologyElement | An element in the methodology that constitutes a directly usable resource available to the project team. |
| StageWithDuration | A managed interval of time within a project. |
| StageWithDurationKind | A specific kind of stage with duration. |
| Task | A single assigned job that creates or modifies one or more work products. |
| TaskKind | A specific kind of task. |
| TemplateMethodologyElement | An element in the methodology that is used as a template at the project level, usually through instantiation. |
| UserAssociation | An association between two specific template methodology elements that can be defined by the methodologist. |
| UserAttribute | An attribute of a specific template methodology element that can be defined by the methodologist. |
| WorkProduct | A significant thing of value developed or used during a project. |
| WorkProductKind | A specific kind of work product. |
| WorkUnit | A functionally cohesive operation performed during a project. |
| WorkUnitKind | A specific kind of work unit. |