A thesaurus is a grouping of related idea and words which can be used instead of other words in certain contexts. These words are known as synonyms or words with similar meanings. Writers often use thesauri to replace words in their writing with more suitable words.

The Roget's Thesaurus groups together related ideas in cateogries and orders them near more similar ideas. This complex structure of ideas was first established by Peter Mark Roget and has been extended upon by the Roget family. Many other thesauri list words in a quick-reference alphabetical format similar to a dictionary or encyclopedia.

What are almanacs?

An almanac is a yearly publication providing statistical and other information about a year and key events during a year. These can include astronomical dates, such as phases of the moon and times of sunrises, sunsets and high tides. Almanacs also feature anniversaries.

General Information

Reference is a field concerned with making connections to and mentioning something, most commonly an event, situation, book, location or business. However, abstract ideas and memories can also be referred to, like in the form of quotations and newspaper editorials.

Books, websites and other publications that cover a broad range of human knowledge are known as encyclopedic works or reference works. These can include encyclopedias, almanacs, dictionaries and thesauri, as well as atlases and directories.


A dictionary is a reference publication, that alphabetically lists words. Each listed word is usually accompanied by a definition and the part(s) of speech it belongs to.

Many dictionaries also feature an illustration of the pronounciation, syllables, word origins, irregular inflection of words and etymoligies. Some dictionaries may feature similar words in other languages instead of definitions, such as English-French dictionaries that list English words alphabetically and offer French translations.

Internal Links

1. See also Thesaurus
1. See also English Dictionary