English idioms are used to express certain ideas or opinions and understanding them is important for learning the English language. A person in America might tell you to 'break a leg' or 'think outside the box, depending on the context. Idioms are a creative way to express yourself and can be used to show off your personality. You may encounter idioms in spoken or written conversations.
Using idioms can help improve your conversational skills and help you feel more comfortable and confident with your English language learning abilities. Idioms are a way of speaking English that helps you sound more like a native speaker and can help you progress in your English lessons.
A greeting such as "How are you doing today?" is an example of an idiom. It means "hello" when taken literally, but fluent English speakers understand the idiomatic meaning. The terms idiom and cliché are often used interchangeably, but they're not quite the same thing.
Clichés are expressions that have been repeated so often that they're no longer effective, while idioms are expressions that make sense despite their literal meaning. English prepositional idioms are numerous and often arbitrary.
The best way to learn them is by osmosis or by reading a lot. Words that tend to be used together by native speakers are called collocations. "Heavy traffic" simply "sounds right" to English speakers. Different than is acceptable in place of from in sentences like "Ice cream tastes different than it did when I was a kid".