Wedge
Part of speech: noun
Definition: One of the simple machines; a piece of material, such as metal or wood, thick at one edge and tapered to a thin edge at the other for insertion in a narrow crevice, used for splitting, tightening, securing, or levering (Wikipedia article). A piece (of food etc.) having this shape. A flank of cavalry acting to split some portion of an opposing army, charging in an inverted V formation. A type of iron club used for short, high trajectories. A group of geese or swans when they are in flight in a V formation. Wedge-heeled shoes. A quantity of money.
Part of speech: verb
Definition: To support or secure using a wedge. To force into a narrow gap. To work wet clay by cutting or kneading for the purpose of homogenizing the mass and expelling air bubbles.
Example sentence: Our two party platforms were emphatic about Jerusalem being the capital of Israel. For the Obama administration to remove this language from the Democratic Party platform drives a wedge into one of the few issues that our two parties agreed on.
Hero
Part of speech: noun
Definition: A real or mythical person of great bravery who carries out extraordinary deeds.A role model.The main protagonist in a work of fiction.A champion.An unwilling sufferer of an act of terrorism, terminal disease, or other tragedy.A large sandwich made from meats and cheeses; a hero sandwichSomeone who possesses supernatural powers (in fiction) such as Spiderman.
Example sentence: I think that we all do heroic things, but hero is not a noun, it's a verb.