Well, Theme is the least related. Technically, one could stretch it to be a musical term...... but the rest are undeniably music related. So, I'd go with that :)
"theme" is the least relatable concept of musical form
binary: When instead of repeating the melody (the same musical idea), we decided to create a contrasting part, the music has two parts, and we call this structure the Binary Form. The binary form is one of the simplest in music, and consists of only two sections, called A and B.
simple strophic: In this form we have the liturgical hymns and choirs, in which Theme "A" is the presented verse and with each new stanza the melodic theme is repeated.
timbre: Timbre is the peculiar characteristic of each sound. It is what differentiates two sounds of the same frequency (same note).
