Entity helps the bot to remember certain information which the bot uses to resolve user's queries. 

There are eight different types of entities you can use. The type of entity to use depends on the use case.

Words and Phrases type of entity should be used when you have a definite set of values that users should provide a value from. For example, types of insurance plans, a list of cities you operate in, and so on. You can read more about it here.

Number entity only accepts numeric input from the users. You can add the minimum and the maximum number of digits the entity can store. You can read more about it here.

Regex entity can be used to accept input from the user in a certain pattern, in other words, you can define a regular expression to accept certain input values. For example, order id, insurance number, and so on. You can read more about it here.

Currency entity detects the type of currency the user is providing. for example, if the inputs are USD$ 200, then the currency entity will detect the unit as USD and the value as 200. You can read more about it here.

Attachment entity should be used when you want to accept any media type of file from the user. This entity can accept images, and documents in pdf, word, and excel format. It also accepts videos on the WhatsApp bot. You can read more about it here.

Budget entity accepts the budget entered by users even in text format, for example, if the user is providing input as I am looking for a laptop around 1 thousand dollars then the budget entity converts the text input and captures the value as 1000

Date entity accepts various date formats entered by the user.

Time entity accepts various time formats entered by the user.