I'm really confused about the use of these words. Are there any differences between:<br/><br/>- 'variance' and' variation'<br/><br/>- 'expenditure' and' expense'<br/><br/>- 'legiatimate' and' legal'<br/><br/>Are there anything I should keep in mind before deciding to use the former or the latter word in a certain context?<br/><br/>Thank you for your help<br/><br/>If you don't mind, could you please help me to correct my question. I have tried on my best, however I think it is not a good expression.