Traditional Japanese house name?

What are the traditional Japanese houses with the paper walls called in Japanese? Such as the ones in these pictures:... show more What are the traditional Japanese houses with the paper walls called in Japanese? Such as the ones in these pictures:
http://www.simonedunn.com/wp-content/uploads/nagoya-and-bowling-065.JPG
http://cache2.allpostersimages.com/p/LRG/26/2614/DXQVD00Z/posters/rennie-christopher-yoshijima-ke-house-1890-s-traditional-late-19th-century-japanese-house-takayama-honshu-japan.jpg
Also, what are they made of? Any information about them would be appreciated.
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