The phrase "a frequent subject and" is correct and usable in written English.
It can be used when discussing topics that are often referenced or discussed in a particular context.
Example: "In literature, love is a frequent subject and often serves as a central theme in many novels."
Alternatives: "a common topic and" or "a recurring theme and".
Warhol, later a frequent subject -- and competitor -- of Mapplethorpe's, led me to his friend Maxime de la Falaise, a socialite and model with a food column in Vogue and several cookbooks under her belt.
Titled "Picture of Fate: I Am but a Fisherman Who Angles in the Darkness of His Mind," the Murakami is dominated by the exotic karajishi, or "China-lion," who guards the threshold of Japanese Buddhist temples and is a frequent subject of Chinese and Japanese artists.
Gou made his fortune working nonstop to build Hon Hai Precision Industry, the world's largest contract manufacturer but now he is a frequent subject of society and gossip pages, with tales of trysts and racy entertainment at company dinners.
In addition to making appearances in the international media, Malala has been a frequent subject of profiles and interviews on Pakistani television.
In recent years, this has been a frequent subject of conversation and a source of controversy, with the now infamous 2013 Pew Research Center study, "A Portrait of Jewish Americans" showing a serious decrease in Jewish affiliation among millennials and a disconnect between them and Israel.
"End-of-life care" has become a frequent subject of medical conferences and journal articles, and even the American Medical Association has acknowledged that too many dying patients suffer needlessly, and that the profession needs help to improve their care.
Warren has written a number of academic and popular works, and is a frequent subject of media interviews regarding the American economy and personal finance.
Mr. Ernst talked about his gay brother, a frequent subject of his jokes, and his death from AIDS in 2001.
In addition to stopping at Giverny, also home to the Musée des Impressionnismes, the ship stops at Rouen, whose cathedral was a frequent subject of Monet's, and Le Havre, home to the Musée d'Art Moderne André Malraux, which houses an important collection of Impressionist and Post-Impressionist works.
In addition to stopping at Giverny, also home to the Mus?des Impressionnismes, the ship stops at Rouen, whose cathedral was a frequent subject of Monet's, and Le Havre, home to the Mus?d'Art Moderne Andr?alraux, which houses an important collection of Impressionist and Post-Impressionist works.
