What is the difference between SQL coammand and T-SQL command?

In Tsql we can use SQL commands. But in SQL we can't use the TSQL.

In TSQL we can do the program over the use of SQL commands.

But in SQL we can only issue the commands not the programs

Thanks

C.Pandiaraja

SQL is the Structured Query Language the ANSI/ISO Standard database language. SQL Server's implementation of the language is called Transact-SQL (T-SQL).