Sagot :
I can only answer number 1 so hope it helps...
Answer:
The purpose of the dictionary is to understand unfamiliar words it will show synonyms of the wprd or define and use in a sentence.
I hot the answer to 2 and 3
2.a book that lists words in groups of synonyms and related concepts.
3.the letters.
Answer:
1. To understand the meaning of the words.
2. A book that lists words in groups of synonyms and related concepts.
3. A dictionary is a collection of words along with their meaning, definition and description of usage. A thesaurus presents words as "word families," listing their synonyms without explaining their meanings or usage. Thesauri may list words alphabetically or conceptually.