Different wordings for the same definition/meaning in Networking

In computer network engineering almost always we use different definitions/wordings to explain same thing. In this post, I will give you some examples, please add whatever else you remember in the comment box below , we can discuss them there.  

All below keywords explain the same thing.   

Let's start with MPLS Cases :

1. Tunnel Label , Transport Label , Transport Label , Outer Label , Topmost Label , Outmost Label : They all define PE to PE reachability in MPLS network.
2. Ingress PE , Source PE , Headend PE , Ingress LSR , Edge LSR : Either in MPLS VPN or MPLS Traffic Engineering cases, you can see these keywords and they all define the same thing.
3. Inner Label, VPN Label , VC (Virtual Circuit) Label , Service Label : They all define same thing which is Layer 2 VPN customer service information.

1. IX (Internet Exchange) , IXP (Internet Exchange Point) , Internet Exchange , Peering Point , Exchange Point
2. Public Peering Exchange , MLPE (Multi Lateral Peering Exchange) , Public Exchange

1. Smart Device, Smart Object , Sensors , Intelligent Object , Smart Things