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Find the relevant meaning from the below table:
 
Answer variants:
Blacksmith
Spectacle
Unison
Thunderclap
1.
 \(=\) A person who makes and repairs iron objects and horseshoes
 
2.
 \(=\) Acting or speaking together, or at the same time
 
3.
 \(=\) An unusual or unexpected event or situation that attracts attention, interest, or disapproval
 
4.
 \(=\) Used in similes to refer to something startling or unexpected