Prose
The word "prose" first appears in English in the 14th century. It is derived from the Old French "prose", which in turn originates in the Latin expression "prosa oratio" (literally, straightforward or direct speech).
Pride
"Proud" comes from late Old English "prut", probably from Old French "prud" "brave, valiant" (11th century) (which became "preux" in French), from Late Latin term "prodis" "useful", which is compared with the Latin "prodesse" "be of use". The sense of "having a high opinion of oneself", not in French, may reflect the Anglo-Saxons' opinion of the Norman knights who called themselves "proud".