We don't have synonyms for art-house yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are act, art and part.
(n) :
(uncountable) The conscious production or arrangement of sounds, colours, forms, movements, or other elements in a manner that affects the senses and emotions, usually specifically the production of the beautiful in a graphic or plastic medium.
(n) :
(uncountable) The creative and emotional expression of mental imagery, such as visual, auditory, social, etc.
(n) :
(countable) Skillful creative activity, usually with an aesthetic focus.
(n) :
(uncountable) The study and the product of these processes.
(n) :
(uncountable) The conscious production or arrangement of sounds, colours, forms, movements, or other elements in a manner that affects the senses and emotions, usually specifically the production of the beautiful in a graphic or plastic medium.
(n) :
(uncountable) The creative and emotional expression of mental imagery, such as visual, auditory, social, etc.
(n) :
(countable) Skillful creative activity, usually with an aesthetic focus.
(n) :
(uncountable) The study and the product of these processes.