What is diffirence in using "although" and "however"

QuangtrungvtvDear friend ! I find difficult when use them, please explain me?

I hope the following sentences will enable to understand the usage.

Although he is rich, he is stingy.
He is rich but stingy.
He is rich. However, he is stingy.

The difference is which clause we attach although and however to. Yoong Liat has given good examples. "He is rich," is our main idea. "He is stingy," is unexpected or surprising - it is the contrasting statement. So "Although" introduces the main idea and not the surprising idea, "he is stingy." In the sentences "he is rich. However he is stingy," However introduces the the surprising idea a

Can I use both in one sentence for example " However, although Zhang (2008) reported summer drying signals over Mediterranean, our results and also findings from Sem (2009) as well as Demet et al. (2008) do not confirm this particular signal. "

Thanks in advance, ST.

AnonymousCan I use both in one sentence

Yes.

In your example, however relates to something that was written before (which is not included in your post), and although relates to the main clause, which comes later (our results ...).

CJ