I think that it doesn't mean "art" but also has "crafts", and the labour that comes with it, in it. You wouldn't call a 'tech-nician' an 'artist', but "tech" is the part of that "ΤΕΧΝΗ". ("ΤΕΧ" being translated/converted to "TECH").

I would put thins in a sequence and say (1) Imagination, (2) Implementation. I bring over a TECHnician to assess the damage in the plumbing-stuff-thingies, and he/she will use (1) imagination to come up with the solution, and (2) pull out his/her tools and fix the darn thing. Now.. the 50yo guy with low cut jeans flashing a hairy butt-crack from under the kitchen sink, is not an 'artist' (in its typical/expected format - painter, sculptor, etc.) but he will use imagination (and/or experience) to fix the thing. Just as a painter would use the imagination (and/or experience in the types of paper/canvas/oil paint/water paint/etc.) to make one-more-painting (I am thinking for the similarities of Van Gogh's starry night, and similar paintings)