Bastard hand with abbreviations manuscript from Switzerland.

[cinefactus]

“etor isn't a word”

etos go, walk; march, advance; pass; flow; pass(time); ride; be in the middle

etont? (they) advance?

They aren't words either

Isn’t motis the Ablative Plural of motum? Quod cum motis solis = that with movement sun?

motus is 4th declension, so motibus is the ablative plural

et cum motibus lune = and with movement moon? Where motibus is either Dative or Ablative plural third declension?

lune is a mediaeval spelling of lunae—of the moon.