The definition of an artist is wide-ranging and covers a broad spectrum of activities to do with creating art, practicing the arts and/or demonstrating an art. The common usage in both everyday speech and academic discourse is a practitioner in the visual arts only. The term is often used in the entertainment business, especially in a business context, for musicians and other performers (less often for actors). "Artiste" (the French for artist) is a variant used in English only in this context. Use of the term to describe writers, for example, is certainly valid, but less common, and mostly restricted to contexts like criticism.
Wiktionary defines the noun 'artist' (Singular: artist; Plural: artists) as follows:
Although the Greek word "technÄ›" is often mistranslated as "art," it actually implies mastery of any sort of craft. The Latin-derived form of the word is "tecnicus", from which the English words technique, technology, technical are derived.
The word art is derived from the Latin "ars", which, although literally defined means, "skill method" or "technique", holds a connotation of beauty.
The first division into major and minor arts dates back to Leon Battista Alberti's works (De re aedificatoria, De statua, De pictura), focusing the importance of intellectual skills of the artist rather than the manual skills (even if in other forms of art there was a project behind).
Many contemporary definitions of "artist" and "art" are highly contingent on culture, resisting aesthetic prescription, in much the same way that the features constituting beauty and the beautiful, cannot be standardized easily without corruption into kitsch.
Artist is a descriptive term applied to a person who engages in an activity deemed to be an art. An artist also may be defined unofficially, as, "a person who expresses themselves through a medium". The word also is used in a qualitative sense of, a person creative in, innovative in, or adept at, an artistic practice.
The term may be also used loosely or metaphorically to denote highly skilled people in any non-"art" activities, as well— law, medicine, mechanics, or mathematics, for example.
The English word 'artist' has thus, a narrower range of meanings than the word 'artiste' in French.