Words given on the left side of (::) are related with each other by some Logic/Rule /Relation. Select the missing word/word pair on the right side of (::) from the given alternatives based on the same Logic/Rule/Relation.
Axe : Woodcutter :: ?
1
Author : Pen
2
Surgeon : Scalpe
3
Spade : Labourer
4
Doctor : Stethoscope