wordfinder vs thesaurus

wordfinder and thesaurus both are nouns.

Word	Noun	Adjective	Verb	Adverb
wordfinder	Yes	No	No	No
thesaurus	Yes	No	No	No

As nouns, thesaurus is a hypernym of wordfinder; that is, thesaurus is a word with a broader meaning than wordfinder:

wordfinder: a thesaurus organized to help you find the word you want but cannot think of
thesaurus: a book containing a classified list of synonyms

Other hypernyms of wordfinder include synonym finder.

wordfinder (noun)	thesaurus (noun)
a thesaurus organized to help you find the word you want but cannot think of	a book containing a classified list of synonyms