Вот еще вопрос: текст краткого описания и полного описания может совпадать?
No, this is also considered as duplicate content
But it is important for you to know
If you contain it on a limited number of products, say 5-10
it's not so bad, however I would recommend to avoid it if possible
But if it comes to hundreds or dozens, you're in trouble
But there is a way to display duplicate content
Without getting a penalty:
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Paying attention to what Google wrote in case you do not implement the solutions:
While we encourage you to use any of these methods, none of them are required. If you do not indicate a canonical URL, we'll identify what we think is the best version or URL.
Do not use the robots.txt file for canonicalization purposes.
Do not use the URL removal tool for canonicalization: it removes all versions of a URL from search.
Do not specify different URLs as canonical for the same page (eg one URL in a sitemap and a different URL for that same page using rel = "canonical").
But in such scenario, you are wasting valuable time
Until Google understand what page should give pr priority
