Is there a language activator or conceptual dictionary for French? I haven't been able to find a printed or online one.
More specifically, I am looking for a dictionary that gives related words to a particular word. For example, in the Reader's Digest Reverse Dictionary, the entry for "wall" has words such as alcove, niche, grout, etc. These are related words that a thesaurus doesn't give. This type of dictionary would help me a lot in learning vocabulary in a systematic way. Longman (the publisher) calls such a book a Language Activator, but they don't make one for French.