Hi community,

We have multiple pages from our own different sub-domains for same topics. These pages even rank in SERP for related keywords. Now we are planning to show only one of the pages in SERP. We cannot redirect unfortunately. We are planning to use rel canonical tags. But the page content is not same, only 20% is similar and 80% is different but the context is same. If we use rel canonicals, does Google accepts this? If not what should I do? Making header tags similar works? How Google responds if content is not matching? Just ignore or any negative score?

Thanks