Three words that get confused frequently are sight, site, and cite. Here are their definitions:
Sight, a noun, refers to both the sense of seeing (“he lost his sight in the explosion”) and a view (“we caught sight of the mountains”).
Site, also a noun, refers to a place, either in the physical world (“our house will be built on this site”) or in the cyber world (“go to my web site”).
Cite, a verb, means either to quote from a source (“she cites many scientific sources in her paper”), to mention something as evidence or proof (“the article cited several examples of corruption”), or to summon to court (“he was cited for speeding”).