Wow. Apparently my grandmother's lifetime of quilt making, she made 1 for each of her children and grandchildren, doesn't count as a hobby. Each quilt taking 1

Wow. Apparently my grandmother's lifetime of quilt making, she made 1 for each of her children and grandchildren, doesn't count as a hobby. Each quilt taking 1 to 2 years to complete. Only her husband's shop work and his steam engine restoration efforts were as a hobby. Everything she did was merely... a what? What is the appropriate word for what she did?