Cathay vs ch'i

Cathay and ch'i both are nouns.

Word	Noun	Adjective	Verb	Adverb
Cathay	Yes	No	No	No
ch'i	Yes	No	No	No

Cathay (noun)	ch'i (noun)
a communist nation that covers a vast territory in eastern Asia; the most populous country in the world	the circulating life energy that in Chinese philosophy is thought to be inherent in all things; in traditional Chinese medicine the balance of negative and positive forms in the body is believed to be essential for good health