sal / sol [sɒl]
sal – n. – 1. salt; 2. a valuable timber tree of India, Shorea robusta yielding the resin dammar; 3. Geology one of the two primary categories of igneous rocks, broadly including those rich in non-ferromagnesian aluminous and siliceous minerals such as quartz, feldspars, and feldspathoids
sol – n. – 1. a former coin used in France and its colonies that varied in value according to time and place; 2. Music the fifth note of Guido d'Arezzo's hexachords, and of the octave in modern solmization; the note G in the natural scale of C major