Which is a courteous way of making an inquiry?

Which words synonymous to one another?

It is a part of speech that names a person , place, thing or idea.

An adverb is a word that modifies a verb, an adjective, or another adverb by making its meaning more specific.

Choose the synonyms of the word, tragedy.

Arrange the following to form a unified coherent paragraph. Take note of the transitional words.

They are series of books that contain information about many different subjects or a lot of information about a particular subject.