Note that Idols are mostly Celebrities as well but Celebrities may not be Idols. Idols are usually cuter, adored and you love to cuddle all over. However, celebrities may be famous stars but not in the idol sense. They may be highly talented, good looking and be our role model but certainly not to be cuddled all over. ;) So, well, in a way, there may be some replication and cross referencing both ways for both the classifications but that cannot be helped. :)