The word 'knowledge' is an uncountable noun, meaning it doesn't have a plural form. 'Knowledge' refers to facts, information, or skills one obtains through experience or education. It's an overarching term that encompasses various types of information, expertise, and understanding. You could have 'knowledge' in countless fields, like physics, history, or math, but regardless of the specifics, you 'have knowledge', not 'knowledges'. Think of it as an all-encompassing ocean of insights and understanding, rather than individual drops of facts. However, one might occasionally see 'knowledges' in postmodern academic texts, where it's used to denote different systems or types of knowledge, but this usage is not common and can be considered jargon.
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