Emotionally, it is just that whenever we are depressed or miserable, we like to have someone to spread it to, because it makes us feel like we are not the only ones miserable. But if you are talking philosophically I don't know the answer.
Compagnie (fem.) means 'company' (as in "misery loves company") or 'business' in English. And in military terms, une compagnie is a sub-unit of a regiment.
It's not really an idiom. It means "what are you thinking about."
RFP is not an idiom. It's an abbreviation.
It is not an idiom, it means your nose is itching.
When someone says they love your company it can either mean they are very relaxed with you and enjoy being around you or, they could be in love with you.
It's not an idiom. It means the tip of your nostril.
idiom means expression like a page in a book
"Sieve" is not an idiom. See the related link.
Do you mean misery?"The earthquake in Haiti caused tremendous misery to thousands of families."
This is not an idiom. It is a measurement. $100,000 is how you write it in numbers.
Simply its mean a bully.
The idiom your blood is boiling usually means that you are mad/furious.