A wrong-word error occurs when a student misuses a word, apparently because s/he does not fully understand the meaning of that word:
Abraham Lincoln once quoted, "I am in favor of animal rights as well as human rights. That is the way of a whole human being" (qtd. in Achor 109).
Abraham Lincoln is credited with originating the quotation above, but saying "Abraham Lincoln once quoted . . . " implies that Lincoln merely repeated what someone else had already said. There are several ways to improve the passage, including:
Abraham Lincoln once stated, "I am in favor of animal rights as well as human rights. . . ."
Abraham Lincoln has been quoted as saying, "I am in favor of animal rights as well as human rights. . . ."
Although we classify homophone errors--e.g.: site for cite or sight--as misspellings, we classify "near homophones" as wrong-word errors:
A little cold or flu could turn into a serious case of ammonia.
He had been given a slow-acting poison, and the only antic dote was in the safe beside him.
Since a listener is apt to notice when a speaker says ammonia instead of pneumonia or antic dote and antidote, these particular errors seem to be wrong-word errors rather than misspellings.