High is a hard-working word: it's an adjective, a noun and an adverb. It also ends in 'gh', like laugh or neigh. Have you ever wondered where that 'gh' came from. Feels like an appendix, doesn't it - like, you have one, but you don't really need it, but maybe it served some vital purpose way in the past. Well, the 'gh' at the end of an English word actually used to be pronounced! The sound it makes (called a voiceless velar fricative for anyone needing some trivia to torture a younger sibling with) is like a cross between a 'ka' and a 'ha'. It is a sound used in Gaelic, whence many of our modern English words derive. 

Hi is a casual way of saying hello,  and also, the homonym of high.

Hi was first recorded as being something one person said to another upon seeing them back in the days when Middle English was spoken.

Middle English? 

Won is the homonym of one. It's also the past of win and the English spelling of the basic monetary unit of North and South Korea. 

Won comes from Old English and Germanic words meaning "strive" and "take possession of". Winning often involves getting a prize. If you won a single unit of currency in a smallest of all possible lotteries in Korea,  you might finding yourself getting to say you won one won. Or you'd be too underwhelmed to say anything at all. What do you think a won would get you in Seoul?

Energizer Bunny arrested - charged with battery.

Shoe, the homonym of shoo, is, as you know, the item you wear on your foot that is not a sock. Or a tiny toe ring.

Has anyone ever said to you, "If the shoe fits, wear it?" It means that something you and they were talking about actually descibes you! 

Well, did you know that shoes didn't used to fit individual feet? Meaning, that until the 18th century, your right and left shoes were identical! So you would have to figure out yourself which one felt best on which foot.