lanthanum, La, atomic number 57 -- (a white soft metallic element that tarnishes readily; occurs in rare earth minerals and is usually classified as a rare earth)
Louisiana, Pelican State, LA -- (a state in southern United States on the Gulf of Mexico; one of the Confederate states during the American Civil War)
la, lah -- (the syllable naming the sixth (submediant) note of a major or minor scale in solmization)