Any time you "create", that could be considered art--whether in the kitchen, at the sewing machine, or in the woodshop, or using canvas and paints or pens.
As to whether it is a hobby or not--a person's "profession" means you get paid for it--a "hobby" generally means it's not your source of income. Comparing the two is like asking asking if apples are fruit or red?
Many times a hobby starts out as just dabbling, then he/she gets good at it and then turns into a profession. Then, often that person acquires another hobby so that they can "get away" from the "job" for a while.