What are the differences between stored procedures and triggers ?

Stored procedure normally used for performing tasks But the Trigger normally used for tracing and auditing logs.

Stored procedures should be called explicitly by the user in order to execute But the Trigger should be called implicitly based on the events defined in the table.

Stored Procedure can run independently But the Trigger should be part of any DML events on the table.

Stored procedure can be executed from the Trigger  But the Trigger cannot be executed from the Stored procedures.

Stored Procedures can have parameters.But the Trigger cannot have any parameters.

Stored procedures are compiled collection of programs or SQL statements  in the database.

Using  stored procedure  we can access and modify data present in many tables. Also a stored procedure is not associated with any particular database object. 

But triggers are event-driven special procedures which are attached to a specific database object say a table. 

Stored procedures are not automatically run and they have to be called explicitly by the user. But triggers get executed when the particular event associated with the event gets fired.