Question: While the monthly American magazine, Club, stands as a pornographic publication, Architectural Digest's principal subject is what? 

Context paragraphs:
Costas Kondylis: Costas Kondylis and Partners, LLP, is an American architectural firm, headquartered in the Manhattan borough of New York City, New York.  Founded by Costas Kondylis, the firm and its work have been featured in several magazines, including "Architectural Digest", "The New York Times", "The New Yorker", "Town & Country" and "Vogue".  It has also been the subject of a television documentary.

Loslyf: Loslyf is a South African Afrikaans-language pornographic magazine.  The magazine was founded in 1995 by J.T. Publishing, a South African subsidiary of the American "Hustler".  It was the first Afrikaans-language pornographic publication.  Launched only one year after the end of apartheid, the magazine was greatly controversial as it posed a clear opposition to the conservative Afrikaner nationalist morals that influenced the apartheid government’s censorship of media

Club (magazine): Club is a monthly American pornographic magazine which is a spin-off publication of the United Kingdom's "Club International".  "Club" features sexually oriented articles, video reviews, and pictorials that include hardcore pornography, masturbation, dildo usage, and lesbianism.

Roger Thomas (designer): Roger Thomas (born 1951) is an American interior designer best known for his work on resort hotels and casinos in Las Vegas, including the Bellagio, Wynn Las Vegas and Encore Las Vegas.  His work also extends to other areas of the world, including Wynn Macau and Encore Macau in China.  He is the Executive Vice President of Design for Wynn Design & Development, and principal of the Roger Thomas Collection.  Thomas has been named five times to the "Architectural Digest" AD100 list of the world's preeminent architects and designers, and was inducted into the "Interior Design Magazine" Hall of Fame in 2015.

Architectural Digest: Architectural Digest is an American monthly magazine founded in 1920.  Its principal subject is interior design, not architecture more generally, as the name of the magazine suggests.  The magazine is published by Condé Nast, which also publishes eight international editions of "Architectural Digest".

Science Digest: Science Digest was a monthly American magazine published by the Hearst Corporation from 1937 through 1986.

Texas Monthly: Texas Monthly is a monthly American magazine headquartered in Downtown Austin, Texas.  "Texas Monthly" was founded in 1973 by Michael R. Levy and has been published by Emmis Publishing, L.P. since 1998 and now owned by Genesis Park, LP.  "Texas Monthly" chronicles life in contemporary Texas, writing on politics, the environment, industry, and education.  The magazine also covers leisure topics such as music, art, dining, and travel.  It is a member of the City and Regional Magazine Association (CRMA).

Bon Appétit: Bon Appétit is an American food and entertaining magazine published monthly by Condé Nast.  It was started in 1956.  It became a bimonthly magazine in December 1956 in Chicago.  The magazine was acquired by M. Frank Jones in Kansas City, Missouri in 1965.  Jones was owner, editor and publisher until 1970, when "Bon Appétit" was merged into the Pillsbury Company, who sold it to Knapp Communications, publishers of "Architectural Digest", four years later.  Condé Nast Publications, the current owners, purchased Knapp Communications in 1993.  Its sister publication was "Gourmet", before the latter was discontinued in October 2009.  The magazine's headquarters, which had been in Los Angeles, CA, were moved to New York City in early 2011.

Urdu Digest: Urdu Digest (Urdu: ‎ ) is a monthly Urdu magazine in Pakistan.  It is first digest in Pakistan and was first published in November 1960 in Lahore.  Its appearance is similar to the famous American monthly, "Reader's Digest".  Its writings present a traditional way of religious Pakistani life and covers a large variety of topics.  "Urdu Digest" is constantly performing the duty of character building and consciousness of Pakistanis for the last 53 years.  The magazine also has been serving to strengthen the ideology of Pakistan and promoting national integration.  "Urdu Digest" publishes translations of international literary stories, adventure stories, hunting stories and articles on science, technology, history, animals, education, health, positive thinking and business role models.

Malator: Malator is a house in Druidston, Pembrokeshire, Wales, built in the Earth house architectural style.  It was built for, and owned by, former Member of Parliament Bob Marshall-Andrews.  The architectural firm who designed the building was Future Systems.  Malator has appeared on television series such as the More4 programme "Homes by the Sea", and has been received positively by critics with "Architectural Digest" listing it as one of the most innovative houses of the 20th century.

Supporting paragraphs: Club (magazine) Architectural Digest
Answer: interior design