Terrain,
Terrain is the world surface. This can be realistic ground like on earth or in a made up cartoon style game. An example of this is in BioShock Infinite, the terrain would be Colombia, the name of the place you are based in. Another example would be in Assassins Creed Brotherhood, the terrain is Rome.
Architecture,
Architecture is the environment within a game, more specifically the buildings around the level. An example of this is in BioShock Infinite, the architecture would be the buildings within the terrain of Colombia. Another example would be in Assassins Creed Brotherhood, the buildings would be the architecture.
Objects,
Objects are the objects in the game that the player can either see and/or interact with. An example of this is in Skyrim. You can pick objects up and move them around if the player chooses to do so.
Characters,
Characters are the models with a game that are made to look like a character whether that be to look like a human or to look like a creature of the imagination. An example of this is BioShock Infinite, the main character is named Booker Dewitt and you play as him throughout the game.
NPC's or Non-Playable Characters are the characters within a game that you cannot control and play as. An example of this is in Skyrim, all the characters in this game apart from you're character are NPC's as you cannot play as them.
Feedback,
Feedback is when you use a device, like a controller, and a response of whatever button you press happens in-game. Another example is that when you press a key on a keyboard and the letter appears onscreen. The guitar for the game, Guitar Hero, is another example of feedback. When you press the colours in sequence to the screen and said response takes place.
Interface,
An interface is what you can see on the screen and from there you can do multiple different things. One example of this is in near enough every game you have a pause menu from here you can go into options, other tabs or even save/quit a game.
Perspectives,
Perspectives are the way of playing a game. Whether this being in First Person or Third Person. An example of this game is Call of Duty. This game is an FPS (First-Person Shooter), this means that you play from the eyes of the character you are playing as. As if you are the character.
Full Motion Video (FMV) is a technique for video game narrative. This uses pre-recorded video files to display action within a video game. An example of this is in Call of Duty. These have heavy emphases on the cutscenes or FMV to help make the story more immersive. This is making games to seem more like a movie than a game. These cutscenes usually happen at the start or end of a game or after each mission.