Question

A book of articles on many subjects arranged alphabetically:​

Answer 1

Answer:

An encyclopedia is a book or set of books in which facts about many different subjects or about one particular subject are arranged for reference, usually in alphabetical order.

Answer 2

Answer:

Dictionary

Explanation:

A dictionary is a listing of lexemes from the lexicon of one or more specific languages, often arranged alphabetically (or by radical and stroke for ideographic languages), which may include information on definitions, usage, etymologies, pronunciations, translation, etc..[1] It is a lexicographical reference that shows inter-relationships among the data.[2]