I'm looking for the lyrics of a song.
Can you help me with (finding) that?
Can you help me find that?
Can you help me look for that?
Could you give me some help on that subject?
You are having trouble with something and would like help in dealing with it
"Shout" and "yell" are more or less synonymous. Other than style or poetry (and a few idiomatic expressions), I can't think of any reason why you couldn't use one in place of the other.
A "scream" includes a shrill note that indicates extreme emotion. This is the infamous "Wilhelm Scream'.
These are also screams: American girls screaming at the Beatles
A "cry" is a loud exclamation, often sounding like someone (or something) in distress. There is also the additional nuance that a "cry" is meant to be heard over some distance.
As you mentioned, you can "cry" for help, but so can animals: Bear cub crying for its mom.. We can describe the sound wildcats make as "cries" (or "screams") even though these are not from distress, because it sounds like something that needs help.
(Edit) We would most likely say that a heavy metal vocalist screams into the microphone. Apparently this (along with growling) is the actual term for this style. As a scream, by definition, includes higher-pitched elements, a rapper who is "singing" loudly into the mike could be said to be either shouting or yelling.
Be aware that, in current slang, to "shout out" means to "favorably acknowledge" as in "a public expression of thanks".
I want to give a shout out to all of my fans, without whom I wouldn't be here on this stage.
Best Answer
I'm trying to think of a context where there is a difference, and it's very hard to do that. What makes this tricky is that the two are pretty much interchangeable in many contexts:
but there are other occasions when one would be slightly (or clearly) favored over the other:
And then there's this gem:
If I had to summarize, I'd say that think of seems to mean recalling something specific, while think about seems to mean considering some subject in a more vague or general way for some length of time. The two are sometimes interchangable because there are many situations where you can't think about something without also thinking of it, such as when you are fondly remembering your deceased mother.
This is a great question; I hope others weigh in. I think I might be getting close to something here, but I'm not convinced I've nailed it.