Person
  A named person or their initials
  Example: Andrea M. Ghez, Ghez A.

Organization
  A named organization that is not an observatory.
  Example: NASA, University of Toledo

Location
  A named location on Earth.
  Example: Canada

Entity of Future Interest
  A general catch all for things that may be worth thinking about in the future. Often terms related to gravitational waves.

Observatory
  A, often similarly located, group of telescopes.
  Example: Keck Observatory, Fermi

Telescope
  A "bucket" to catch light.
  Example: Hubble Space Telescope, Discovery Channel Telescope
  
Mission
  A spacecraft that is not a telescope or observatory that carries multiple instruments
  Example: WIND

Instrument
  A device, often, but not always, placed on a telescope, to make a measurement.
  Example: Infrared Array Camera, NIRCam

Wavelength
  A portion of the electromagnetic spectrum. Can be communicated as a particular wavelength, a name, or a particular transition.
  Example: 656.46 nm, H-alpha

Archive
  A curated collection of the literature or data. Very similar to Database.
  Example: NASA ADS, MAST

Collaboration
  An organizational entity containing multiple organizations, observatories, and/or countries.
  Example: the Plank Collaboration

Survey
  An organized search of the sky often dedicated to large scale science projects.
  Example: 2MASS, SDSS

Grant
  An allocation of money and/or time for a research project.
  Example: grant No. 12345, ADAP grant 12345

Fellowship
  A grant focused towards students and/or early career researchers.
  Example: Hubble Fellowship

Database
  A curated set of data. Very similar to Archive.
  Example: Simbad database

Citation
  A reference to previous work in the literature.
  Example: Allen et al. 2012

Celestial Object
  A named object in the sky
  Example: ONC, Andromeda galaxy

Celestial Region
  A defined region projected onto the sky, or celestial coordinates.
  Example: GOODS field, l=2, b=15.

Celestial Object Region
  A named area on/in a celestial body.
  Example: Inner galaxy

Event
  A conference, workshop or other event that often brings scientests together.
  Example: Protostars and Planets VI

Formula
  Mathematical formula or equations.
  Example: F = Gm1m2/r^2, z=2.3

URL
  A link to a website.
  Example: https://www.astropy.org/

Identifier
  A unique identifier for data, images, etc.
  Example: ALMA 123.12345

Tag
  A HTML tag.
  Example: <bold><\bold>

Text Garbage
  Incorrect text, often multiple punctuation marks with no inner text.
  Example: ,,,