The Romans did not have pens in their time, so they did not have a specific word for a ballpoint pen. The closest translation I can give you is:
penicillus, -i (masculine) a painter's brush or pencil
The Latin word for pen is 'calamus'.
Karamu is the Kikuyu word for the English word pen.
Pen as in writing instrument has evolved from the Latin word penna meaning feather (as feathers were used to make writing instruments at one time) Pen as in animal enclosure is from an old English word.
Nearly is the English equivalent of the Latin root 'pen-'. A Latin derivative of the Latin root is the adverb 'paene', which also means 'nearly'. An English derivative is the adjective 'penultimate', which means 'nearly last' or 'next to last'.
The African Luhya term for the English word pen is Ikalamu.
Camel is an English word. It is camelus in Latin.
"Tu es petite pen" does not have a clear meaning in French. "Tu es" means "you are," but "petite pen" is not a recognized French phrase. If you meant "Tu es petite pain," it translates to "You are little bread."
The word latin in the English language would be Latin.
One Latin equivalent to the English word 'conversation' is 'conloquium'. An English derivative of that original Latin word is colloquy. Another Latin equivalent to the English word 'conversation' is 'sermo'. An English derivative of that original Latin word is sermon.
Sometimes we use a word 'pena' for a pen or a quill. Commonly used word for 'pen' is 'bolpoin'(read: bol-po-in), which I believe is a domesticated (and truncated) form of the English word 'ball point pen'.
The use of a Latin word in a very modern term is the significance of 'ubi' in 'ubi-pen'. The Latin word 'ubi' means 'where'. Its use shows that Latin still is relevant and useful nowadays.
The Latin word for 'counsel' is 'concilium'. One derivative in English from that original Latin word is conciliary. Another example of an English derivative is reconciliation.