Question

what is the earth and what is the star

Answer 1

A star is a luminous ball of gas, mostly hydrogen and helium, held together by its own gravity. It is a massive, bright, sphere of very hot gas called plasma .

Earth is the third planet from the Sun and is the largest of the terrestrial planets. The Earth is the only planet in our solar system not to be named after a Greek or Roman deity. The Earth was formed approximately 4.54 billion years ago and is the only known planet to support life.
Hope this helps you..

Answer 2

Answer:

Although it's a star – and our local star at that – our sun doesn't have a generally accepted and unique proper name in English. We English speakers always just call it the sun. You sometimes hear English-speakers use the name Sol for our sun.