Three of the four group of words are alike in some manner. Select the odd group of words.

(Knife, Needle, Plumbline)

THE LOGIC;

1) (Knife, Needle, Plumbline),

They are not professional tools.

2) (Surgeon, Warrior, Chef),

All three are professional tools.

3) (Farmer, Mason, Doctor),

All three are professional tools.

4) (Labourer, Tailor, Sculptor),

All three are professional tools.

Thus, (Knife, Needle, Plumbline) is the odd one.