What difference between if/even if, though/although?
Although/ though/even though are used to express a contrasting idea.
Although she tried to stop, she hit the man.
She couldnīt sleep although it was late.
I enjoyed my trip to India though I was quite ill.
I enjoyed my trip to India even though I was really ill. (= big contrast)
After though, although and even though use a subjet + verb. Even though is stronger than although and though. Though is more informal than although.