Ferdowsnet consists of a set of Persian words in which each word is grouped with its doublet words referring to a single concept. Also, hierarchical and semantic relation is formed between these groups. For the first time, a network of words for the English language is designed and published. The main idea of this project is based on the fact that concept and entities around us are equivalent in different languages. Thus, if we can find a proper translation in Persian for every English word, we can automatically generate almost all of the groups of word related to a single concept an also, we can use the relations defined between concepts in groups of English words because these relations exist in the Persian language too. In fact, concepts, and entities are language independent.