Repeated fields in multiple tables or not

Hi, assume we have three table News Articles Menu and we have two field 1.Description 2.Keywords I want to know which is better? * add this two fields to all three tables * make another table (tbl_meta) with these fields : metaId,description,keywords and three Interface table 1.(a table that NewsId and metaId are forionkey of it) 2.(a table that ArticleId and metaId are forionkey of it) 3.(a table that MenuId and metaId are forionkey of it) and make relation between tbl_meta and previous tables Separately. tbl_meta and News table tbl_meta and Article table tbl_meta and Menu table

thanks a lot