Random question. What do "PrivateSend" and "InstantSend" do in the wallet when sending funds?
Private send related to Privacy, keep the information about transactions, receivers and senders of those transactions in shadow.
Instant Send means sending coins almost instantly, really really fast.
For more details, you can search those words by Google.
Slightly helpful with your answers, so here it is clear that the meaning of the instant word is instantaneous or quick in an instant.