Difference between "though" and "although" and their correct usage

Question

Both English words "though" and "although" translate to Spanish as "aunque", "sin embargo", "empero", "no obstante", etc.

When / how should each of them be used? How may I know when and in which context "though" or "although" should be used?

The following examples might help illustrate the point:

• Vocabulary is adequate, though restricted, for the theme being presented.
• Vocabulary is adequate for the theme being presented, although restricted.

Am I right in the usage of these two apparently equivalent words as given in the sentences above?

Answer 1

Both can be used interchangably [in many contexts], "though" is more informal, and "although" is more formal.

"Although" can't go at the end of a sentence, when this is the case "though" is usually used instead.

"even though" expresses more contrast, but still relays the same message.

I like this movie. It's weird, though. (very informal)

I like this movie....although it is pretty strange. (less informal)

I like this movie even though it's strange. (even less informal)

You're examples are fine, except in the second sentence I'd recommend saying "Although restricted, ......." (place that at the beginning rather than the end)

Thanks so much! It was of great help for the course-grading rubric I'm currently translating from Spanish. - burst3, Jul 18, 2012

GGood effort even though you had so little time.. - annierats, Jul 18, 2012