Redundancy in linguistics means saying something more than once or giving extra information, just in case the listener missed something or didn't understand. It's like when your mom asks you to clean your room, and she reminds you again to pick up your toys and put your clothes in the hamper, just to make sure you heard her correctly.
Sometimes, redundancy is used to emphasize certain words or ideas in a sentence, kind of like bolding or underlining words in a book. For example, saying "I really, really like ice cream" puts extra emphasis on how much you enjoy ice cream.
Redundancy can also be seen in the way we repeat words or phrases in conversations. If someone tells you a joke and you respond by saying "that's funny, funny!", you're repeating the word "funny" to show that you found the joke really amusing.
Overall, redundancy in linguistics is like adding extra information or repeating things to make sure the listener fully understands what is being said.