plese explain these words with example

Try dictionary.com.

sir i tried it but in the dictionary they did not tell where to use it. and in the competition these type of thing ask repeatedly.
please explain with exmaple so that i can answer the fill in the blanks correctly.

thank you

mrmanshubhamplease explain the difference among and give one example in each refute,decline,refusebroadcast, telecast

If you use OneLook on line, mrmanshubham, it will refer you to a large number of dictionaries, which gives you access to many definitions and example phrases: http://www.onelook.co