1. Simple Antonyms

afraid and confident

a. She is afraid.

b. She is confident.

Exhaust range of possibilites, for things that they can collocate with no middle ground between them, they are binary.

2. Gradable Antonyms

bright and dull

a. The light was bright.

b. The light was dull.

These sentences are contrary. Both can’t be true but both may be false or one may be true and one may be false.

3. Reverses

down and up

a. He put the paper down.

b. He picked the paper up.

These are two words (normally verbs) if they denote motion or change in opposite directions.

4. Converses

doctor and patient

a. Mike is my doctor.

b. I am the patient to Mike.

Pairs or opposites where one can’t exist without the other. They are complementary antonyms.

5. Taxonomic sisters

dog and canine

a. Snickers is my dog.

b. Snickers is a canine.

A dog is a kind of canine. Snickers is a dog who is a canine. Certain kind of hyponymous relationship that involves classification.