Answer:
Staple foods vary from place to place, but typically they are inexpensive or readily available foods that supply one or more of the three organic macronutrients needed for survival and health: carbohydrates, proteins, and fats. Typical examples of staples include tuber- or root-crops, grains, legumes, and other seeds.
It looks really good but I think you should put a comma before ( like ) and I suggest to take the ( grave or ) part because it will sound a lot more better
"Slang" are words that are new, flashy, and popular for only a short time
