In my understanding 'knowledge' is one of a group of nouns in English that is characterized as uncountable (meaning 'knowledge' should never be made plural).
If that is the case, is there a word in English that describes the concept of individual bits of known material that can be made plural?
In other words, if knowledges is incorrect (although there is apparently some debate over that), what can be used in its place?
Edit 1: So there has been a decent amount of input so far and I felt like I should clarify one thing. The concept I need to capture is more than just information or data. Those are more related to trivia and facts. The word I am looking for is a countable noun that encompasses more than a physical skill that can be trained and observed. It is more than a list of facts. It needs to contain the concept of a body of information that can be used for extrapolation. For instance, naming the individual pieces of an engine is facts or data; understanding how they interplay and how that can assist in troubleshooting is knowledge; being able to repair a cracked head is a skill. The first example (fact, datum) and the last (skill) are countable, knowledge is not. So if I have knowledge of a group of separate topics I have knowledges. If this doesn't actually clarify anything, please let me know.