> For the complete documentation index, see [llms.txt](https://old-docs.clarifai.com/guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://old-docs.clarifai.com/guide/v7.2/portal-guide/concept/knowledge_graph.md).

# Knowledge Graph

The Clarifai Knowledge Graph lets you map your custom concepts to a common set of concepts understood by all applications on the Clarifai platform. The knowledge graph makes it possible to link data across multiple custom and pre-built models in a meaningful way.

The Knowledge Graph uses Clarifai's concept mapping model to establish a hierarchical relationship between your concepts. Concept relationships are organized by three different *predicates*: hypernyms, hyponyms, and synonyms.

**Hyponym** represents an 'is a kind of' relation. The following relationship: 'honey' (subject), 'hyponym' (predicate), 'food' (object) is more easily be read as 'honey' 'is a kind of' 'food'.

**Hypernym** is the opposite of 'hyponym'. When you add one of the relationships the opposite will automatically appear for you in queries. The 'hypernym' can be read as 'is a parent of' so: 'food' (subject), 'hypernym' (predicate), 'honey' (object) can more easily be read as:'food' is a parent of 'honey'.

**Synonym** The 'synonym' relation defines two concepts that essential mean the same thing. This is more like a "is" relationship. So for example a 'synonym' relationship could be: "puppy" is "pup" The reverse is also true once the former is added so: "pup" is "puppy" will appear in queries as well.

You can create these mappings in your application with a few easy steps.

1. Consider the following application that has four concepts: beverages, smoothie, breakfast, and french\_toast. You can use the Knowledge Graph to create hierarchical relationships between the concepts.

![](/files/-MYfKXqU3EJ6bA3fs8GZ)

1. You can link concepts as hierarchical by going to the details of either of the concepts. In the shown application, french\_toast falls under breakfast. You can link them by accessing the View Details section of either concept.

![](/files/-MYfKXq_G6YFoB4EhtnM)

1. Once, in the details dashboard, you can link breakfast as a hypernym to french\_toast under the Input Relations menu.

![](/files/-MYfKXqed8Yaq2HoShxY)

1. Once you list breakfast as a hypernym to french\_toast, it will set french\_toast as a hyponym to breakfast automatically.

![](/files/-MYfKXqlfN2EBOHaHyRL)

1. This process can be used to create similar relationships between beverages and smoothie. Beverages will be listed as a hypernym to smoothie.

![](/files/-MYfKXqrpH310BthQjc9)

1. By doing this, smoothie will be listed as a hyponym to beverages automatically.

![](/files/-MYfKXqyltuE-16qx--4)