The Difference Between Affect and Effect

As a verb, to affect means ‘to act upon or have an influence on’, as in “Sunless days affect my mood.” It can also mean ‘to make a show of; to put on a pretense of; to feign; to assume’ as “to affect ignorance.”To effect means ‘to bring about or create’ as in “to effect a change.” If you affect something, you do to it. If you effect something, you cause it to be.

Advertising might affect the sales of widgets (by causing them to increase), or it can effect sales (bring them about) if, for example, there were no sales at all to begin with.

As a noun, effect means ‘result, consequence, outcome’. An effect is that which is produced when you affect something: “The poem affected me deeply; it really had an effect on me.” Affect as a noun is a term from the field of psychotherapy meaning ‘the emotional complex associated with an idea or mental state’. Keep in mind that usually if you want a noun, the word you want is effect, but if you want a verb, the word you want is affect.

Via Dictionary.com

 

The Difference Between Might and May

May expresses likelihood while might expresses a stronger sense of doubt or a contrary-to-fact hypothetical. The difference in degree between “You may be right” and “You might be right” is slight but not insignificant: if I say you may be right about something, there is a higher degree of probability that you are right about it than if I say you might be right about something. Example: You think Einstein is the most brilliant physicist who ever lived? You may be right. / You think it’s going to rain this afternoon even though the sun is shining this morning? Well, you might be right. May expresses likelihood while might expresses a stronger sense of doubt or a contrary-to-fact hypothetical: We might have been able to go if Keir had not been so slow to get ready.

Via Dictionary.com