Oh, my...such a deep question whilst I am at work. So much to discuss about the definition of art, it would be impossible to discuss here. Thanks for eliciting some discussion...
But, we could at least start with a basic definition of art:
"National Foundation on the Arts and the Humanities Act* (excerpts)20 U.S.C. 952 (b) The term ''the arts'' includes, but is not limited to, music (instrumental and vocal), dance, drama, folk art, creative writing, architecture and allied fields, painting, sculpture, photography, graphic and craft arts, industrial design, costume and fashion design, motion pictures, television, radio, film, video, tape and sound recording, the arts related to the presentation, performance, execution, and exhibition of such major art forms, all those traditional arts practiced by the diverse peoples of this country. (sic) and the study and application of the arts to the human environment.
20 U.S.C. 952 (c) The term ''production'' means plays (with or without music), ballet, dance and choral performances, concerts, recitals, operas, exhibitions, readings, motion pictures, television, radio, film, video, and tape and sound recordings, and any other activities involving the execution or rendition of the arts and meeting such standards as may be approved by the National Endowment for the Arts established by section 954 of this title. "
Whew!
Then there is the idea of conveying, creatively, emotion and expression.
We could discuss forever but must get back to work. Will check back later.🙁