For those who, like me, have no fucking clue:
Polysemy: the capacity for a sign (like a word) to have multiple meanings (that is, multiple semes or sememes and thus multiple senses), usually related by contiguity of meaning within a semantic field.
Paranomasia: a play on words; a pun
Liederkries: General term for song-cycle; used specifically by Schumann for 2 sets of songs, his 9 Heine settings, Op.24, and his 12 Eichendorff settings, Op.39, both 1840. Term first used by Beethoven to describe An die ferne Geliebte.