"Somebody" vs "Someone"
I thought these two were synonymous and both used frequently. I know I use "someone" far more often, however Duolingo consistently marks it wrong. Am I mistaken?
Here are the entries from the Oxford Dictionary for both words:
somebody pronoun 1. some person; someone. 2. a person of importance or authority
someone pronoun 1. an unknown or unspecified person; some person. 2. a person of importance or authority.
I can't detect a difference, though someone or somebody surely can and will express a deep-rooted preference for one or the other in their dialect and will be upset if you don't use the words just as they do.
From the internet (top Google search result): "In most contexts, they are interchangeable. The only difference that most native speakers can agree upon is that someone is more formal than somebody (just as anyone is more formal than anybody, and everyone is more formal than everybody)."