no,columnname and tablename not same to assign

yes . it's possible
create table emp10(emp10 varchar(20))

yes.we can have a column name in the table name.
create table order
(
order varchar(10),
number int
)

select * from information_schema.columns where 
column_name='orderid' 

The above query is used to find all the tables and views in 
the Database  which contain ‘orderId’ as column name.

But to find only the tables in the Database which 
contain ‘orderId’ as column name, use the below query. 


select col.table_name from information_schema.columns Col 
join information_schema.tables Tab
on col.table_name=tab.table_name and
col.column_name='orderId'and tab.table_type='Base Table'

Please find the below query in which, the tables are 
selected depends the column name empNo. 

select table_name from information_schema.columns where 
column_name='empNo'