Though and even though:

Though is informal. It means the same as although.
“Though/Although  I liked the sweater, I decided not to buy it,”


We can also use though at the end of a sentence.
“/ liked the sweater. I decided not to buy it, though.”


Even though is stronger, more emphatic than although.
“Matthew looked quite fresh, even though he'd been playing squash.”
“Even though you dislike Jessica, you should try to be nice to her.”