art:  Like arm, arthritis, and article, art goes back to an Indo-European root *ar-, which meant ‘put things together, join’. Putting things together implies some skill: hence Latin ars ‘skill’. Its stem art- produced Old French art, the source of the English word. It brought with it the notion of ‘skill’, which it still retains; the modern association with painting, sculpture, etc did not begin until the mid 17th century.
Latin derivatives of ars include the verb artīre ‘instruct in various skills’, from which ultimately English gets artisan ; and artificium, a compound formed with a variant of facere ‘do, make’, from which we get artificial . => arm, arthritis, article, artificial, artisan, inert
early 13c., "skill as a result of learning or practice," from Old French art (10c.), from Latin artem (nominative ars) "work of art; practical skill; a business, craft," from PIE *ar-ti- (cognates: Sanskrit rtih "manner, mode;" Greek arti "just," artios "complete, suitable," artizein "to prepare;" Latin artus "joint;" Armenian arnam "make;" German art "manner, mode"), from root *ar- "fit together, join" (see arm (n.1)).
In Middle English usually with a sense of "skill in scholarship and learning" (c. 1300), especially in the seven sciences, or liberal arts. This sense remains in Bachelor of Arts, etc. Meaning "human workmanship" (as opposed to nature) is from late 14c. Sense of "cunning and trickery" first attested c. 1600. Meaning "skill in creative arts" is first recorded 1610s; especially of painting, sculpture, etc., from 1660s. Broader sense of the word remains in artless.
Fine arts, "those which appeal to the mind and the imagination" first recorded 1767. Expression art for art's sake (1824) translates French l'art pour l'art. First record of art critic is from 1847. Arts and crafts "decorative design and handcraft" first attested in the Arts and Crafts Exhibition Society, founded in London, 1888.
Supreme art is a traditional statement of certain heroic and religious truths, passed on from age to age, modified by individual genius, but never abandoned. The revolt of individualism came because the tradition had become degraded, or rather because a spurious copy had been accepted in its stead. [William Butler Yeats]