Where can I get a dictionary of commonly used Russian words grouped by category?

Question

Text Processing Automation

Good afternoon.
I am looking for a database of Russian words in a format convenient for parsing.
There are two requirements:
1. Common and subject words are needed. That is, there should not be such words as "existentiality" or "transcriptase". Words (at least most of them) should be familiar to the first grader, and so that they can be represented with a specific picture.
2. Words must either be divided into semantic categories (animals, plants, body parts, materials, etc.), or provided with such tags.
Does anything similar exist?
Thanks in advance.