Commonly misused homonyms

The following table contains some commonly misused homonyms. The first two columns contain the synonyms that are mistakenly interchanged. The third column provides a description of each word, and the fourth column offers examples.

Word	Word	Descriptions	Examples
Affect	Effect	“Affect” is always a verb meaning “to influence.”	Knowing the rules for grammar will affect your writing.
		“Effect” is a noun that means “the result of an action.”	The professor questioned the effect of the math course.
Allusion	Illusion	An “allusion” is a reference to something in literature or to an important historical event.	John was alluding to the prize he won last year.
		“Illusions” are false ideas or a misleading image.	I was under the illusion that I would be given a bonus.