Hey There!!
I think the answer to this is: The 3 one is. A Relative. The 4 one is. A noun. And, The last one is. adverbial.
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Wheres the sentence................................................................................
Answer:
irritation
Explanation:
they all come from a verb "irritate"
Answer: no
Explanation:it is a verb like
The captain orders the crew to turn back.
it is not a noun at all but a verb
hope this helps