Instead of the character's name above the dialogue, put "together" or all the character's names instead. ie "Joey + Diana + Mark"
Yes, the word 'screenplay' is a noun; a word for a movie script; a word for a thing.
No, they are characters form The Cat in the Hat by Dr. Seuss
Ted Williams was quoted several times as saying hitting a baseball was the single most difficult thing to do in sports.
Yes. Saying hi to a friend is good thing because it acts as greetings.
A word for another way of saying something is a synonym.
Joey from Friends: "How you doin'?" Totally classic.And, a lesser known character, Tim Riggins from the amazing, underrated Friday Night Lights: "Texas forever."Both shows and both characters are great. There's definitely something to be said about saying the same thing all the time. There's power in it.
Who are the characters of the story
Yes, thing is a noun, a common, singular noun.
ideograms
It is only a saying, there is no such thing.
Not at all.
The saying 'you can have too much of a good thing' means that something pleasant may become unpleasant in the long-run.