Using big words can actually make your writing less effective, as it can make it more difficult to understand and can even make you appear less intelligent.

In fact, research has shown that shorter, simpler words are generally easier to read and understand than longer, more complex words. So, when it comes to writing, it's best to focus on using words that are clear, concise, and easy to understand.

Many tests of comprehension like the GRE (look here if you want the best coaching for GRE)look at your ability to understand these words, while language tests like the IELTS and PTE (the best coaching for IELTS)look at your ability to use these words correctly in both writing and speaking. If you want to take a mock speaking test, click here.

Here are ten examples of words that are often used incorrectly:

1. Affect/effect: "Affect" is a verb that means to influence or change something, while "effect" is a noun that refers to the result of an action or event. For example, "The new policy will affect our budget" and "The effect of the new policy on our budget is unclear".
2. Compliment/complement: "Compliment" is a noun or verb that means to express admiration or praise, while "complement" is a noun or verb that means to complete or enhance something. For example, "She complimented me on my outfit" and "The red shoes complement the dress perfectly".
3. Disinterested/uninterested: "Disinterested" means impartial or unbiased, while "uninterested" means not interested or indifferent. For example, "The judge was disinterested in the outcome of the case" and "He was uninterested in attending the party".
4. Enormity/enormousness: "Enormity" means extreme evil or wickedness, while "enormousness" means great size or magnitude. For example, "The enormity of the crime shocked the community" and "The enormousness of the task was overwhelming".
5. Imply/infer: "Imply" means to suggest or hint at something, while "infer" means to deduce or conclude something from evidence or reasoning. For example, "She implied that I was not invited to the party" and "I inferred from her tone that she was upset".
6. Irregardless/regardless: "Irregardless" is not a word and should be replaced with "regardless," which means without regard or in spite of something. For example, "He went to the party regardless of the rain".
7. Literally/figuratively: "Literally" means exactly or precisely, while "figuratively" means metaphorically or symbolically. For example, "I literally ran all the way home" and "His heart was figuratively broken".
8. Peruse: "Peruse" means to read something carefully or thoroughly, but it is often used incorrectly to mean to skim or glance over something quickly. For example, "I perused the report before the meeting".
9. Prevaricate: "Prevaricate" means to avoid telling the truth or being straightforward, but it is often used incorrectly to mean to procrastinate or delay. For example, "He prevaricated when asked about his whereabouts".
10. Utilize: "Utilize" means to make use of something effectively, but it is often used incorrectly to mean to use something unnecessarily or inappropriately. For example, "She utilized her skills to complete the project".

It's important to use words correctly in writing tests because it helps to ensure that your message is clear and easy to understand. Using big words can actually make your writing less effective, as it can make it more difficult to understand and can even make you appear less intelligent. By focusing on using words that are clear, concise, and easy to understand, you can communicate your message effectively and ensure that your writing is well-received.