There are 3 types of variables in Solidity

Local

• Declared inside a function

• Not stored on the blockchain

State

• Declared outside a function

• Stored on the blockchain

Global

• Provides information about the blockchain

• Here is the link to global variables docs

  https://docs.soliditylang.org/en/develop/cheatsheet.html#global-variables

There are 3 types of variables in Solidity

Local

• Declared inside a function

• Not stored on the blockchain

State

• Declared outside a function

• Stored on the blockchain

Global

• Provides information about the blockchain

• Here is the link to global variables docs

  https://docs.soliditylang.org/en/develop/cheatsheet.html#global-variables