Khi
Part of speech: symbol
Definition: (uppercase Χ, lowercase χ), the 22nd letter of the Greek alphabet.
Chi
Part of speech: noun
Definition: The twenty-second letter of the Classical and Modern Greek alphabets, and the twenty-third letter of Old and Ancient alphabets.A form of psychic energy.
Example sentence: I do yoga. I do tai chi. I do a lot to keep my body and my spirit together so I can work.