It is a device/tool which is useful to work with information. The information can be numbers, words, pictures, movies, sounds...
Example: I use the computer in class for the group projects.
es: Ordenador
Podcast
noun
It is a program (which could be with music or talk) made available in digital format to be downloaded automatically over the Internet.
Example: I have recorded a podcast to explain the differences between rock and pop music.
es: podcast
Radio
noun
Radio is a way of sending sounds or other information through the air. The information is carried by invisible radio waves. Radio waves are used for broadcasting, or sending out, radio and television programs. Radar, cell phones, cordless telephones wireless computer networks, and other forms of communication use radio waves, too
