Answer:
They are example and non-example
Explanation:
One could come up with non-examples that are related to the word, but that are not examples of the word.
In this case.
A non example of a mammal would be a lizard.
Mammal and lizard are example of living things.
But lizard is non example of mammal.
Mammal are like lizard because they are living things and they are animals, but lizard is not an example of mammals.
