The word 'Human' is a/an -

1. Human (adjective)
Meaning: being, relating to, or belonging to a person or to people as opposed to animals:

Example sentence:
- The human body is composed of about 60 percent water.
- They found some remains which were thought to be human.


2. Human (noun)
(also human being)
Meaning: a man, woman, or child:

Example sentence:
- The greatest damage being done to our planet today is that being done by humans.

Source: Cambridge Dictionary