earnings return profits gains benefits 都什么区别?

earnings:
the net income or profit of a business.
income
money in
profit
1 margin 新加坡人把它翻译成"赚头",很贴切
2.return.for a period of trading,the surplus of net assets at the end of a period over the net assets at the start of that period,adjusted where relevant for amounts of capital injected or withdrawn by the proprietors.
gains benefits
they are not jargons.
gains means increase,
benefits are the merits/advantages when doing benefits-costs analysis
turnovers
the total sales figure of an organisation for a stated period,where trade discounts,VAT/GST,excise duty are excluded