General meaning of "art" or "skill":
* Craft: This emphasizes the skill involved in a particular activity.
* Expertise: This refers to a high level of knowledge and ability in a specific area.
* Mastery: This implies complete control and understanding of a skill or subject.
Specific meanings related to the arts:
* Technique: This refers to the specific methods and procedures used in a particular art form.
* Aesthetics: This refers to the principles of beauty and taste that inform artistic creation.
* Creativity: This emphasizes the imaginative and inventive aspects of art.
Ultimately, the best modern word to use will depend on the specific context and the particular meaning of "ars" you wish to convey.