Imagery uses figurative language to represent objects and actions in a way which appeals to our physical senses.
There was this big white dog, covered in black spots.
Dialogue is a conversation between people in a book or play which develop characters, create mood, tone and tension, as well as propel the story.
It wasn't happy little dude. They were killed by some random drunk who turned out to be their best friend.
Who killed my parents?
Tone is the attitude of the speaker or narrator through vocab or intentions.
I'm going to slit your throat! Better start running.
"Busting her jar of mayonnaise on the floor, shards of glass and oozing cream all around his feet." This is a showing of imagery because it makes you hear the sound of shattering glass and vividly describes what it all looked like on the floor creating the image in your head
"What's the matter?" This is an example of dialogue of a mother saying something to a child and is showing that she really cares for her daughter.
"There was no one in the front seat, no one at all" His reaction to this and his tone is one of understatement because he acts like it is something normal when in reality it is completely out of the ordinary.