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Could you tell me the difference between 'affect' and 'effect' with some suitable examples too if possible?
I was taught - by a superb Englsih teacher at school - that the difference is - 'effect' when there is a change in the physical/material elements under discussion and 'affect' when there is a change in the emotional. This would stack with the world 'affection' which is to do with feeling. So, one says 'The Butterfly Effect' or the 'Effect of Margaret Thatcher had on education when she was that Minister of Education. But we'd say ' Margaret Thatcher affected my view of education.' A very subtle distinction but worth thinking about. Am I - or was my teacher right?
Effect:

1. Something brought about by a cause or agent; a result.

2. The power to produce an outcome or achieve a result; influence: The drug had an immediate effect on the pain. The government's action had no effect on the trade imbalance.

Affect:

1. To have an influence on or effect a change in: Inflation affects the buying power of the dollar.

2. To act on the emotions of; touch or move.

The main differences of effect and affect are:

To affect something is to change or influence it, to effect something is a rather formal way of saying `to make it happen'. Confusingly, because either may produce an 'effect' or result this is a common error.
Confusion between the words affect and effect is so common that I almost never see either of the words used correctly. Since I read anything that doesn't move fast enough to get away from me, and since I read hundreds of essays by college students each semester, I have reason to believe that this error is not just a misspelling, but an actual misapprehension of the two words and how they are used.

Generally speaking, affect is a verb and effect is a 
noun
. When you affect something, you produce an effect on it. Even in the passive voice, something would be 
affected
not effected.

There are certain situations where effect is used as a verb and situations where affect is used as a noun, but very few people ever have a need to use them thus, so unless you are already confident of your ability to use these words correctly,  just treat as general the rule that effect is a noun and affect a verb.

(If you feel the need to get fancy, however, here are the meanings of effect as a verb and affect as a noun. As a verb, effect means to execute, produce, or accomplish something; as a noun, affect is used primarily by psychologists to refer to feelings and desires as factors in thought or conduct.)

If you find that you have sometimes made the mistake of switching these two troublesome words, you probably should proofread specifically for them until you have formed the habit of using them correctly without having to think about it.

The 99% Rule for
Effect and Affect

99% of the time effect is a noun, and affect is a verb (have an effect on, influence).
If the question is "Should I use effect or affect?" the answer is given by the 99% rule 99% of the time.

And yes, effect can be used as a verb (bring about, produce, create, cause), and affect can be used as a noun (feeling, emotion), but these usages are comparatively much less frequent. For all practical purposes these meanings can be dismissed from consideration in 99% of cases.

CJ
They are 2 different words.

In simple terms, affect means 'make a difference to', whereas effect means 'a result' or 'bring about a result' here are some excerpts from a dictionary.

AFFECT

  1. To have an influence on or effect a change in: Inflation affects the buying power of the dollar.
  2. To act on the emotions of; touch or move.
  3. To attack or infect, as a disease: Rheumatic fever can affect the heart.


  4. EFFECT

    1. Something brought about by a cause or agent; a result.
    2. The power to produce an outcome or achieve a result; influence: The drug had an immediate effect on the pain. The government's action had no effect on the trade imbalance.
    3. A scientific law, hypothesis, or phenomenon: the photovoltaic effect.
    4. Advantage; avail: used her words to great effect in influencing the jury.
    5. The condition of being in full force or execution: a new regulation that goes into effect tomorrow.

      1. Something that produces a specific impression or supports a general design or intention: The lighting effects emphasized the harsh atmosphere of the drama.
      2. A particular impression: large windows that gave an effect of spaciousness.
      3. Production of a desired impression: spent lavishly on dinner just for effect.

      4. The basic or general meaning; import: He said he was greatly worried, or words to that effect.
      5. effects Movable belongings; goods.
Tricky indeed...

First of all, affect is always a verb. It means to bring on or cause a change, or to cause emotion, to provoke feelings (good or bad). It can also mean to adopt a false characteristic.

Examples:
Many people drive dangerously, but this does not affect me, since I don't even have a car. (Affect means there is no effect to the cause - no relation between the bad drivers and myself).

I cried when I saw the film "Shindler's List". The film affected me deeply. (It touched me, it made me cry.)

Effect can be either a noun or a verb. As a noun, it means the result of something (cause and effect).

Examples:
He affected a British accent even though everyone knew he was american.

Unemployed workers are a direct effect of factory closures.

As a verb, it means the same thing as the verb "effectuate", which means to bring about, to accomplish.

Example:
When the government effected tax cuts, everyone received a larger paycheck.

(The two words affect/effect are closely related ... one could say something to the effect of: "we were all deeply affected when the government effected a tax increase.")
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Comments 
Please don't add to posts that are so old. This one is three years old.
The original participants are probably not around anymore to appreciate your help with their question.

Thank you.
CJ
Had to reply to your request to not add to these inquiries since they are so old. I disagree, because they still come up on search engines, so new people are viewing them all the time.
It might be better to start a new post.

Within that post you can always reference the old one if you want.
Just write the word post in front of the post number and /post after it.
Enclose both post and /post in square brackets ([ ]).

Why not register and participate in all our new posts? Emotion: smile

CJ
this post helped me
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