All 6 Uses

although
in
The Alchemist, by Coelho
(Edited)

Although his new world at the moment was just an empty marketplace, he had already seen it when it was teeming with life, and he would never forget it.
p. 45.1

although = even though
But he stayed with the job because the merchant, although he was an old grouch, treated him fairly; the boy received a good commission for each piece he sold, and had already been able to put some money aside.
p. 53.4
Although the boy had developed a superstition that each time he opened the book he would learn something important, he decided it was an unnecessary burden.
p. 78.5
Although the vision of the date palms would someday be just a memory, right now it signified shade, water, and a refuge from the war.
p. 88.8
Although their flight appeared to have no pattern, it made a certain kind of sense to the boy.
p. 102.9
And, although his mouth was bleeding and swollen, he told his attackers that he had twice dreamed of a treasure hidden near the Pyramids of Egypt.
p. 167.4 *

Definitions:

(1) (although)
even though -- used to introduce an idea that contrasts with or makes the main statement surprising

At the start of a sentence, although can play a role similar to words like however, yet, still, even so, on the other hand, or nonetheless—all of which signal contrast. In the middle of a sentence, although can sometimes be used where but or though might also work, but though or but often sound more natural. For example, "She's a great teacher, though not the most popular" is usually smoother than "She's a great teacher, although not the most popular."
(2) (meaning too rare to warrant focus)