What are red words?
90% of the time, speakers of English use just 7,500 words in speech and writing.These words appear in red, and are graded with stars. One-star words are frequent, two-star words are morefrequent, and three-star words are the most frequent.
- 1[uncountable] a system of broadcasting information and programmes that people can listen to
Radio and television have had an enormous effect on people's lives.
He worked in radio for nearly 40 years.
BBC Radio 1
- 2[uncountable] a system of sending and receiving spoken messages by using electronic signals, for example the system used by the police or pilots
We remained in constant radio contact.by radio:
We might be able to contact him by radio.