Meta no-index - indexing disallowed by meta robots noindex tag.Sometimes link juice goes despite no-follow significantly when nofollow backlink is included into an excellent article on a high-authority site.
Meta nofollow - page can be indexed, but most of the links on this page do not pass link juice.Sometimes can be indexed by Search engines cause robots.txt gives just tips to Google and other engines to index or not. robots.txt - indexing disallowed by robots.txt file.
Still may be indexed cause canonical only gives to search engines information exactly what page is not original.
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