Misc: What is deficient in one that suffers from beri beri?

Questions

- An ornament which has two forms: (1) upper mordent (or inverted mordent); (2) lower mordent or simply, mordent.?

(It.) - Dying away (of force and sometimes, speed).?

(It.) - Animated, moving.?

- (1) In modern use this is a religious choral composition in Latin of the Roman Catholic service corresponding to the anthem in the Anglican service. (2) In medieval times, this was a vocal composition based on a given set of words and melody, which sometimes came from a secular song.?

(Fr.) - (1) A term sometimes used in English for leitmotif. (2) Sarne as motiv or motive.?