The spelling of the word "are side" may be confusing to some. When pronounced, it sounds like one word, but it is actually two separate words. "Are" is pronounced /ɑr/ and "side" is pronounced /saɪd/. "Are" in this context is a conjugation of the verb "to be" and means "exist" or "am, is, or are." "Side" means a surface or plane of an object. Together, "are side" means the surface or plane that exists.