A Complete list of closed english words and Synonyms?

0 Hi,02br
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00Does anybody know of any list or database that contains the entire list of closed english words? 02br
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00I am a computer programer and require this information as part of a program I am writing. 02br
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00I am also looking for the entire list of conjunctions, determiners, pronouns and adpositions (these are all closed words too).02br
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00And finally I am also looking for a Synonym database for finding words(open and closed) with the same kind of meaning.02br
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00I've searched around but to no avail. There are plenty of sites giving common closed words but I havent found a place that offers the entire list.02br
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00The reason I need the entire list is because my program will not function correctly if a user types in a closed word that the program does not know about.02br
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00Thanks in Advance. 0-