i am familiar with the definitions of these words re numbers, but am not so sure about using these with sentences.
e.g., "...writing contracts requires very precise (OR very accurate) wording."
thesaurus.reference.com isn't very helpful in that the synonyms are interchangable.
dictionary.reference.com is somewhat better, but i'd like a 2nd (or 3rd or 4th ...) opinion.
per ardua ad astra