This is the joint application of a general Finnish thesaurus, a music thesaurus, and another thesaurus that could be health related.
Database of records is not publicly accessible or searchable, but API info suggests it might be accessible to developers through the API http://www.zotero.org/support/dev/start.
Can be browsed online via the Vocabulary Bank for Education but interface is complicated so probably better to download.
Will be translated into more languages. "The complete thesaurus, or any substantial part of the thesaurus, may not be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise without the permission of the copyright holder."
Includes proper names.