Answer: Yes with possible slight variation A main idea is more general, while a concept is more specific. For example in an essay about child labour you could say the main concept is child labor, but the main idea is how to combat child labor.
Explanation:
In the book Bud, Not Buddy by Christopher Paul Curtis, there are four main themes. They are the importance of family, hope and perseverance, and the effects of racism.
Explanation:
He alone knew how deep was the deluded man's chagrin at the failure of the little plot which he fancied was prospering finely
"He's so unreliable!" she said crossly.
Since I learned shorthand, I can take dictation at eighty words a minute.
The magazine was read quite widely even by some of the hierarchy"
I gasped at the impertinence of the suggestion
With the rapture of great winds to blow
To be non-biased, have thorough research habits, a good work ethic, to produce the story as closely to the true events as possible (no filler or otherwise distracting language to take attention away from the topic)