vitre — GLASS

[VEE-tr] (n. f.) Behind glass walls that guaranteed a controlled environment, the biochemists tried to do what Mr and Mrs Kornbluth had failed to do in the comfort of their own home: create a Baby K. Should they be successful, it was decided that the story of this in vitro fertilization would be kept within the vitreous confines of the lab and not become subject of Thanksgiving Dinner ribbing from future cousins of the unborn Baby K. Keeping cells in vitro means that they're in glass (it's strictly Latin) but vitreous means made of glass (and that is from the French word vitre, which of course means glass.)

vendre — TO SELL

[VON-dr] (v.) A vendor will get you to welcome in your home a stranger with a suitcase full of knives. They'll find a way to scrub Dead Sea salt into your palm, even when the only thing you salt are fries. The soulless sycophants will pry those bills from your hand because it's what they do: they sell. The word vendor is a close cousin of the French verb vendre, meaning to sell.