Can I correct first your question? When can we use these (use these when u reffer to more than one object or anything) words?
Sample sentences: whatever- I will accept whatever you will give me.
Whoever- I will accept you whoever you are.
Wherever- Wherever you are, don't forget to call me.
Whenever- whenever there are calamities, the people in our place are helping each other.
Pls correct me also if there's something wrong. Thanks