Think of sandbox as a penalty box like in hockey. Which basically means, some of your pages ranking for some keywords will get a time out or will not be in the game or will be penalized in serps or will not be indexed at all.
Yup. Complete deindexing from Google for all of your blacklisted keywords.thanks.
if entire site got de-indexed, is it sandbox?
Yup. Complete deindexing from Google for all of your blacklisted keywords.
De-indexed is more worse than sandbox. To my knowledge sandbox means that your keyword(s) are sent so low in the serps that they won't be useful for getting organic traffic.
Sandbox is indicated by a site that doesn't rank in the SERPS (but still indexed).
A penalty is usually indicated when a site is no longer ranking and de-indexed.
Your getting confused with this....
Deindex - G00gle has removed your site and its pages from the index completely due to a problem. To get back in the first thing to do is work out the problem which caused it and fix. Then submit a reconsideration request.
Sandbox - you site continues to be in the index (shows up doing a 'site:' search) but is nowhere for your choosen keywords. This is where you carry on adding good quality links in the hope of rising up again. Note: your site continues to be in the G00gle index.
Besides, My site is a autoblog. In My Google Webmaster Tools, it show my site have 5,649 Page Not found, 2,095 page have Duplicate meta descriptions. Will these make my site deindexed in google ?