*Although, even though*
Although - linking word - expresses the idea of contrast.
e.g. - Although Amit has a car, he doesn't often drive it.
The clause with although can come at the end.
e.g. - Although the cafe was crowded, we found a table. OR We found a table, although the cafe was crowded.
Though - is informal. It means the same as although.
e.g. - Though / Although I liked the sweater, I decided not to buy it.
We can use though at the end of a sentence.
e.g. - I liked the sweater. I decided not to buy it, though.
Even though - is stronger, more emphatic than although.
e.g. -
1). Ram looked quite fresh, even though he'd been playing cricket.
2). Even though you dislike Sanya, you should try to be nice to her.
Note: We can use 'in spite of the fact (that)' in the same way as 'although'.