architecture vs beaux arts

architecture and beaux arts both are nouns.

Word	Noun	Adjective	Verb	Adverb
architecture	Yes	No	No	No
beaux arts	Yes	No	No	No

As nouns, beaux arts is a hypernym of architecture; that is, beaux arts is a word with a broader meaning than architecture:

architecture: the discipline dealing with the principles of design and construction and ornamentation of fine buildings
beaux arts: the study and creation of visual works of art

Other hypernyms of architecture include bailiwick, discipline, field, field of study, study, subject, subject area, subject field, fine arts.

architecture (noun)	beaux arts (noun)
the profession of designing buildings and environments with consideration for their esthetic effect	the study and creation of visual works of art
an architectural product or work
(computer science) the structure and organization of a computer's hardware or system software
the discipline dealing with the principles of design and construction and ornamentation of fine buildings