Is "been" also verb or something else?
"Been" is one form of the verb "to be". It is used in different ways depending on the rest of the sentence. Do you understand the different forms of a verb (particularly the verb "to be")?
To be
Present simple:
I am
You are
He/she/it is
We are
You are
They are
Past simple:
I was
You were
He/she/it was
We were
You were
They were
Present perfect:
I have been
You have been
He/she it has been
We have been
You have been
They have been
Past perfect:
I had been
You had been
He/she/it had been
We had been
You had been
They had been
Those forms can all be used before "-ing" (verb) to create various forms of the continuous.
I am walking. (Present simple + -ing form)
I was walking. (Past simple + -ing form)
I have been walking. (Present perfect + -ing form)
I had been walking. (Past perfect + -ing form)
However, "been" is also used followed by an adjective:
I am tired. (Present simple + adjective)
I was tired. (Past simple + adjective)
I have been tired. (Present perfect + adjective)
I had been tired. (Past perfect + adjective)
Can you see now that "has/have been" is not used ONLY in the continuous?