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Also to know is, what is the meaning of certain area?

: not having any doubt about something : convinced orsure. —used with it to say that something is known to be trueor correct. —used to say that something will definitelyhappen or that someone will definitely do something —oftenfollowed by to + verb. certain. pronoun.

One may also ask, what does it mean to be sure of something? · est. free from doubt as to the reliability,character, action, etc., of something: to be sure ofone's data. confident, as of something expected: sureof success. convinced, fully persuaded, or positive: to besure of a person's guilt.

Besides, how do you use certain in a sentence?

certain Sentence Examples

1. I feel certain of it.
2. I'm certain he doesn't realize it, but he does put himselffirst.
3. She was equally certain that he would have loved them.
4. We are certain about the results of this test, though.
5. Glancing at the clock on her nightstand, she waited untilcertain her father had left then rose.

What is the difference between certain and sure?

Both are adjectives and the meaning is the same. Butthere is a difference in frequency. In colloquial language"sure" is the word used, whereas "certain" is avariant that is less frequent in spoken language. In writtenlanguage "certain" can be used as a means ofvariation.