How do you differentiate between capture fishing, mariculture and aquaculture?

How do you differentiate between capture fisheries, mariculture and aquaculture ?

Differentiate between Pisciculture and Aquaculture.

Differentiate capture fishery and culture fishery.

How do you differentiate habitat from environment?

How do you differentiative a butterfly from a moth?

How can you differentiate between free central and axile placentation?

How do you define velocity?

How can you differentiate between suspension, colloidal solution and true solution ?

Derive an expression for true power and virtual power of an a.c. circuit. How will you differentiate between true power and virtual power?