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# Notes as Nouns
With language, we use nouns to represent *things*, *objects* or *entities* in our notes, such as:
- *concept*: core idea or topic
- *person*: profile of an individual
- *event*: describes a specific occurrence like a meeting
- *place*: information about a location
These are all notes, but their structure and attributes are different because they represent various types of objects in our life.
## Note types
In a linked-note system like Obsidian, we generally classify major categories of notes with different terminology to distinguish their role within the PKM system.
Within my Obsidian vault, I have various kinds of notes. When I think about [[ACE Organization]] based on knowledge, time, and action, what kinds of note belong in each space? They are all __notes__, but what makes them different?
### + (Add inbox)
- *draft*: New draft notes
- *voice*: Captured voice dictation ("freetalking")
- *source*: Information from other sources like articles, books, papers, websites, videos, podcasts, courses, links, or AI prompts
- *focus*: Note clusters being actively developed for publishing
### Atlas (Knowledge)
- *idea*: An interesting spark to explore with my thoughts, knowledge, and insights (these are all connected "dots" in my *Ideaverse*)
- *map*: notes with a *Map of Content* that organize a set of related notes with structure, context, and navigation
- *view*: Dataview queries that produce lists or tables with selection, filtering, and sorting for specific folders and metadata properties, fields, or tags.
- *collection*: Special views of similar notes *in* a specific group: movies, series, books, meetings, people, organizations, quotes, questions, prompts, statements, things
### Calendar (Time)
- *periodic notes*: Chronological notes for different time horizons: day, week, month, quarter, or year
- *journal*: Recorded thoughts and reflections with freewriting in paragraphs and/or lists
- *log*: Timestamped list items with information about events or experiences, like meals, exercise, habit tracking or health metrics
- *plan*: notes about current and future intentions, actions, and events
- *review*: notes that review past events and experiences with reflections, learning, and gratitude
## Efforts (Action)
- *app*: Information about an application like Obsidian, Actions for Obsidian, Shortcuts, or Hookmark
- *effort*: An ongoing area of life or topics of specific interest
- *project*: A specific effort with a defined outcome and completion date
- *output*: Creative works for sharing
### x (Extra)
- *template*: Reusable note content or snippets
- *image*: Embedded note attachments for icons, banners, screenshots, graphs, or other images
- *visual*: Visual notes like Obsidian canvases, Excalidraw drawings, mind maps, etc.
- *document*: Embedded or linked PDF documents included as note attachments
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## Questions
- #my/question Do *output* notes belong in Atlas or Efforts? When describing folders, I included Works (Outputs) under Atlas. Outputs are produced by the actions of efforts, but they represent knowledge.