Stress
Unpleasant dreams are called Bad dreams. Very unpleasent dreams are called nightmares.
Spend.
You can call them victims. Especially when dealing with diseases, they can be called 'the afflicted.' There are many words; fool, gambit, mark pawn, gopher, wretch, or even sufferer. :)
The expostition
To attempt something.
fears might be called an unpleasant emotion caused by the belief that someone or something is dangerous. (scared of something)
Unpleasant dreams are called Bad dreams. Very unpleasent dreams are called nightmares.
Spend.
An unpleasant sound could be called any number of things, including annoying.
It was called this because it goes alphabetically, i.e. the hurricane before it anywhere in the world was called something beginning with H and the one after would have been called something begginning with J, etc. There are few names beginning with the letter I so Ida seems unusual.
what is a medical condition called x or something like that
unlikable
It's a nameless song made especially for the show by a band called "The Crystal Method."
Rewording your question... "When you're new at something you may be called a ... ?"Beginner" or "novice" are appropriate. "Rookie" or "amateur" are also good, especially in sports.
The beginning of menstruation is called
songs called Something Bigger, Something Better by Amanda Blank L
The Beginning of the Constitution is called the Preamble.