Humanity can mean either "human-ness" or "humane-ness." It is also the collective term used to describe the only surviving species of
human beings,
Homo sapiens sapiens. It is often used to replace the terms
man and
mankind, because it is more gender-neutral.
According to the rules in the English language for the formation of plural nouns, the plural of humanity is humanities.
Since humanity consists of a single species, the plural form of the noun is not applicable in this sense. However, it used to refer to non-science related academic subjects, such as literature and music; i.e., "the humanities."
