Yes.
Haven't is short for 'have not.'
Example: "They haven't done their homework. Again!"
Haven't is listed in dictionaries. It is called a contraction.
(For example, won't is a contraction of will not)
See Related links below.
hasnt
The noun 'is' is a verb, a form of the verb 'to be'. The verb 'is' functions as an auxiliary verb and a linking verb.
It is a Linking Verb. The word are is a conjugation of the verb "to be."
It is an action verb.
The verb 'is' is a form of the verb 'to be', a being verb as opposed to an action verb. The verb 'is' also functions as an auxiliary (helper) verb. The verb 'is' also functions as a linking verb.
Hasn't is actually an adjective (describing word) because it describes what someone has done eg: she hasn't done her work.
it hasnt
hasnt
he hasnt
He hasnt.
he hasnt
it hasnt
it hasnt
No he hasnt.
she hasnt died!
She hasnt yet
no he hasnt he plays for argentina