How to change tables to show selected columns dynamically

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SQL-Server-2014

Hi I have 4 tables with the same attribute/column name.

T1
Name	Age	Town
A	22	Berlin
B	18	Hamburg
C	30	New York

T2
Name	Age	Town
A	22	Berlin
D	25	Atlanta
F	21	Accra

T3
Name	Age	Town
E	45	Madrid
B	18	Hamburg
C	30	New York

T4
Name	Age	Town
Z	17	Zurich
E	45	Madrid
S	28	Potsdam

I want to create a sp PROC to display the difference (*new entry ) two columns whenever a user chooses a table dynamically.
(*new entry ) = T2 :T1 what’s new in T2 compared to T1
T4:T2, T3:T3 (dynamically)

Here my sql statement but it only chooses the predefined tables.

CREATE PROC spNewEntrance
	
	(
	@ NewEntrance1 AS NVARCHAR (255),
	@ NewEntrance2 AS NVARCHAR (255)

	)
AS
BEGIN
	
	SET NOCOUNT OFF;
	SELECT  [Age] AS Age, [Town] AS City
	FROM [dbo].[T2]
EXCEPT
	SELECT  [Age] AS Age, [Town] AS City	
FROM [dbo].[T1]


END
GO
EXEC spNewEntrance @ NewEntrance1 = '', @ NewEntrance2 = ''

Can somebody please help me? And frustrated?