Canonical-URL

A canonical URL is the URL of the page that Google thinks is most representative from a set of duplicate pages on your site. For example, if you have URLs for the same page (for example: example.com?dress=1234 and example.com/dresses/1234), Google chooses one as canonical.

Content-farm

A website that contains very large quantities of content, typically of low quality or aggregated from other sites, generated solely to ensure that it appears high on the list of results returned by a search engine.

Content farms dispense altogether with professional storytelling, in favor of search-engine-optimized information packaging