Answer withExplanation:
Weight Training :
It is the process of developing some parts of your body like your arms legs etc through weight lifting exercises. It is good for your health especially in man
Weightlifting, Power lifting : Theses are somehow similar because they both involve lifting weights so as to get stronger muscles and a nice physical structure.
Body building: This is when you decide to carry out exercises that are capable of developing the whole part your body.
I hope this helps.