noun, noun which may take the genitive case particle 'no'
common to all humanity; shared by humanity
Used to describe things that belong to or are shared by all people, such as values, challenges, or heritage. Often appears in formal or written contexts.
Environmental issues are a challenge common to all humanity.
These ruins are protected as a heritage shared by humanity.
人類 means 'humanity' or 'mankind' as a whole, while 人類共通 emphasizes what is shared or common among all people.
共通 means 'common' or 'shared' in a general sense, but 人類共通 specifically limits the scope to all of humanity.
Compound of 人類 (humanity) and 共通 (common/shared). The exact historical derivation is uncertain, but the meaning is transparent from its components.