A verb is a word that:
(i) Expresses an action
(ii) Expresses the state that something exists, or
(iii) Links the subject with a word that describes or renames it.
Hence, there are two kinds of verbs.
These are action verbs and linking verbs.
Action verbs express actions.
They show what the subject does or did.
Most verbs are action verbs.
Examples: Cats drink milk.
The ball flew over the goal post.
The farmer tills the land.
Robert ran to the house.
The action may be one that you can see.
They crowned their new King.
The action may be one that you cannot see.
She wanted recognition.
Whether the action can be seen or not, an action verb says that something is happening, has happened, or will happen.