Question : Difference between VPS and VDS?

Hey anyone can tell if there exists any difference between a vps and vds cause i seen many people talk about vps and few talk about vds also. So any real difference between the two or they the same thing?

It's the same thing, no? VPS is short for Virtual Private Server and VDS is short for Virtual Dedicated Server.
It's just two different ways to say the same thing.
Check Wikipedia for confirmation.

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Jerlene