aunque

1. although, even though + indicativo

concession about a real fact

• Aunque llueve, salgo.Although it is raining, I am going out.
• Aunque está cansado, trabaja.Although he is tired, he is working.
• Iré aunque no tengo tiempo.I will go even though I do not have time.

2. even if, although + subjuntivo

concession about a possibility

• Aunque llueva, salgo.Even if it rains, I am going out.
• Aunque sea difícil, lo intentaré.Although it is difficult, I will try.
• Aunque tengas razón, no voy.Even if you are right, I am not going.