A "thesaurus" is a book of synonyms. It shows words of the same or similar meaning as the word selected. Most types of thesaurus will also show antonyms, which are words with meanings that are the opposite, or nearly so.
No.
Thesaurus in German is Synonymwörterbuch, Thesaurus
thesaurus
A dictionary of synonyms is called a thesaurus.
Probably a thesaurus, but a dictionary may be some help!
it the same thing
Yes they are true in a Thesaurus.
The noun 'thesaurus' is singular (one thesaurus).The plural forms are thesauruses and thesauri, both are accepted spellings.
If it is ONLY a thesaurus, and not a combined thesaurus and etymology (word origins) book, it will not show word origins.
RCA Thesaurus was created in 1954.
Roget's Thesaurus was created in 1852.
A thesaurus lists words of similar meanings to the one you are looking for.