Sql query for list out all unique columns of tables including primary key of a database in sql server

Write a sql query or script to get or list out all unique columns of tables  including primary key of a database in sql server

--Change the table name 

DECLARE @TableName As VARCHAR(100) = 'Student'

SELECT c.name 

FROM sys.columns c INNER JOIN sys.indexes  i

ON i.index_id = c.column_id

AND i.object_id = c.object_id

WHERE i.is_unique = 1

AND c.object_id = OBJECT_ID(@TableName)