Altough vs Whereas/While

[Radres]

Hi,
Is there someone who wants to help me?
I cannot find any differences but structures in them.
Can I use any sentences with " although" instead of " whereas/ while" ?
For examples; Although it was rainy, he didn't take an umbrella. Is it possible to say: He didn't take an umbrella whereas it was rainy.
Regards
Radres

[David L.]

'whereas' means 'in contrast to, or in comparison with something else'.

"I found the people in France to be very rude to foreigners, whereas people in the other European countries I visited were all exceedingly friendly."

There is no comparison being made between two things in the sentence you suggest:
He didn't take an umbrella whereas it was rainy.
compare:
"This umbrella is suitable for use(noun) / to use(verb) when it's raining whereas this one (umbrella) is not waterproof and meant to be used to keep the sun off one's face."

[Radres]

Hi David,
Thanks a lot for info. I could understand it. However, I have the same problems with " however , while , although " in terms of meanings , not grammar structures or syntax.