Here are some examples:
* Happy is a synonym for joyful
* Big is a synonym for large
* Start is a synonym for begin
Synonyms are useful for:
* Adding variety to your writing: Avoiding repetition by using different words with the same meaning.
* Improving your vocabulary: Expanding your knowledge of different words and their nuances.
* Making your writing more precise: Choosing the most accurate word for the specific context.
* Understanding the meaning of unfamiliar words: By looking up synonyms for words you don't know, you can gain a better understanding of their meaning.
Keep in mind that synonyms are not always perfect substitutes for each other. Sometimes, the subtle differences in meaning can make one word a better choice than another.