> For the complete documentation index, see [llms.txt](https://docs.wellcomecollection.org/catalogue-api/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.wellcomecollection.org/catalogue-api/search/data_informed_development/hypotheses/concepts-subjects.md).

# Concepts, subjects

## Expectations:

* Users expect search to be able to locate works about a concept/subject
* Users expect search to also deliver works that are conceptually similar or items related to the search term; for example, in the case of beer, also beer bottles, labels, breweries
* Users expect a search for a subject to be the first results
* These types of keyword searches may coincide with controlled vocabularies (LCSH, MeSH, LC Genres, other thesauri that users know)

## Examples:

* Beer
* funerary urn
* hms beagle deckplan
* syphilis images
* Spanish flu
* Royal Astronomical Society
* cholera, london, patient
* Colour vision defects